343 lines
18 KiB
JSON
343 lines
18 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-66293",
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"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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"state": "PUBLISHED",
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"assignerShortName": "EEF",
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"dateReserved": "2026-07-24T14:10:01.114Z",
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"datePublished": "2026-11-06T10:16:42.053Z",
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"dateUpdated": "2026-11-10T17:42:24.114Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"collectionURL": "https://repo.hex.pm",
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"cpes": [
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"cpe:2.3:a:qcam:saxy:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.Saxy'",
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"'Elixir.Saxy.Encoder'",
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"'Elixir.Saxy.XML'"
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],
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"packageName": "saxy",
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"packageURL": "pkg:hex/saxy",
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"product": "saxy",
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"programFiles": [
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"lib/saxy.ex",
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"lib/saxy/encoder.ex",
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"lib/saxy/xml.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Saxy':encode!/2"
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},
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{
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"name": "'Elixir.Saxy':encode_to_iodata!/2"
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},
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{
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"name": "'Elixir.Saxy.XML':comment/1"
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}
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],
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"repo": "https://github.com/qcam/saxy",
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"vendor": "qcam",
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"versions": [
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{
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"lessThan": "1.7.0",
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"status": "affected",
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"version": "0.7.0",
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"versionType": "semver"
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}
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]
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},
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{
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"collectionURL": "https://github.com",
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"cpes": [
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"cpe:2.3:a:qcam:saxy:*:*:*:*:*:*:*:*"
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],
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"defaultStatus": "unaffected",
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"modules": [
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"'Elixir.Saxy'",
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"'Elixir.Saxy.Encoder'",
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"'Elixir.Saxy.XML'"
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],
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"packageName": "qcam/saxy",
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"packageURL": "pkg:github/qcam/saxy",
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"product": "saxy",
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"programFiles": [
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"lib/saxy.ex",
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"lib/saxy/encoder.ex",
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"lib/saxy/xml.ex"
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],
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"programRoutines": [
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{
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"name": "'Elixir.Saxy':encode!/2"
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},
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{
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"name": "'Elixir.Saxy':encode_to_iodata!/2"
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},
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{
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"name": "'Elixir.Saxy.XML':comment/1"
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}
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],
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"repo": "https://github.com/qcam/saxy",
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"vendor": "qcam",
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"versions": [
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{
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"lessThan": "6d12ee12b9e32e86ef598b3f3cafccd1840b2f41",
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"status": "affected",
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"version": "7266632e9407842f28ffac254c56dc41210a5690",
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"versionType": "git"
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}
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]
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}
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],
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"configurations": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Only applications that place untrusted text into an XML comment node are affected. The untrusted value must reach <code>Saxy.XML.comment/1</code> or a raw <code>{:comment, text}</code> simple form child that is then serialized with <code>Saxy.encode!/2</code> or <code>Saxy.encode_to_iodata!/2</code>. Documents that are only parsed by Saxy never reach the encoder and are not a vector.</p>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "Only applications that place untrusted text into an XML comment node are affected. The untrusted value must reach `Saxy.XML.comment/1` or a raw `{:comment, text}` simple form child that is then serialized with `Saxy.encode!/2` or `Saxy.encode_to_iodata!/2`. Documents that are only parsed by Saxy never reach the encoder and are not a vector."
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}
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],
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"value": "Only applications that place untrusted text into an XML comment node are affected. The untrusted value must reach Saxy.XML.comment/1 or a raw {:comment, text} simple form child that is then serialized with Saxy.encode!/2 or Saxy.encode_to_iodata!/2. Documents that are only parsed by Saxy never reach the encoder and are not a vector."
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}
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],
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"cpeApplicability": [
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{
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"nodes": [
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{
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"cpeMatch": [
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{
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"criteria": "cpe:2.3:a:qcam:saxy:*:*:*:*:*:*:*:*",
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"versionEndExcluding": "1.7.0",
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"versionStartIncluding": "0.7.0",
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"vulnerable": true
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}
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],
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"negate": false,
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"operator": "OR"
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}
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],
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"operator": "AND"
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}
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],
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"credits": [
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{
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"lang": "en",
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"type": "finder",
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"value": "Peter Ullrich"
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},
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{
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"lang": "en",
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"type": "reporter",
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"value": "Peter Ullrich"
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},
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{
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"lang": "en",
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"type": "remediation developer",
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"value": "Peter Ullrich"
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},
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{
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"lang": "en",
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"type": "remediation reviewer",
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"value": "Cẩm Huỳnh"
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},
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{
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"lang": "en",
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"type": "analyst",
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"value": "Jonatan Männchen / EEF"
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},
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{
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"lang": "en",
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"type": "coordinator",
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"value": "Peter Ullrich"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>XML injection in the encoder of Saxy. <code>Saxy.Encoder</code> does not neutralize the <code>--</code> sequence in XML comment content: <code>escape_comment/2</code> returns the comment binary unchanged in every clause and only appends a space when the comment ends in a single <code>-</code>, so neither an interior <code>--</code> nor a full <code>--></code> is escaped or rejected before the encoder wraps the content in the <code><!--</code> and <code>--></code> delimiters.</p>\n<p>When an application serializes attacker-controlled text as a comment, through <code>Saxy.XML.comment/1</code> or a raw <code>{:comment, text}</code> simple form child, the attacker can close the comment early with <code>--></code> and inject arbitrary sibling markup into the serialized document. A downstream parser then sees elements, attributes, and text that the application never built. Where the document is rendered as HTML or SVG, the injected markup executes as stored cross-site scripting; where it is consumed by another XML processor, the attacker can forge data that the producing application never emitted. Documents that Saxy only parses are not a vector.</p>\n<p>This issue affects saxy: from 0.7.0 before 1.7.0.</p>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "XML injection in the encoder of Saxy. `Saxy.Encoder` does not neutralize the `--` sequence in XML comment content: `escape_comment/2` returns the comment binary unchanged in every clause and only appends a space when the comment ends in a single `-`, so neither an interior `--` nor a full `-->` is escaped or rejected before the encoder wraps the content in the `<!--` and `-->` delimiters.\n\nWhen an application serializes attacker-controlled text as a comment, through `Saxy.XML.comment/1` or a raw `{:comment, text}` simple form child, the attacker can close the comment early with `-->` and inject arbitrary sibling markup into the serialized document. A downstream parser then sees elements, attributes, and text that the application never built. Where the document is rendered as HTML or SVG, the injected markup executes as stored cross-site scripting; where it is consumed by another XML processor, the attacker can forge data that the producing application never emitted. Documents that Saxy only parses are not a vector.\n\nThis issue affects saxy: from 0.7.0 before 1.7.0."
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}
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],
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"value": "XML injection in the encoder of Saxy. Saxy.Encoder does not neutralize the -- sequence in XML comment content: escape_comment/2 returns the comment binary unchanged in every clause and only appends a space when the comment ends in a single -, so neither an interior -- nor a full --> is escaped or rejected before the encoder wraps the content in the <!-- and --> delimiters.\n\nWhen an application serializes attacker-controlled text as a comment, through Saxy.XML.comment/1 or a raw {:comment, text} simple form child, the attacker can close the comment early with --> and inject arbitrary sibling markup into the serialized document. A downstream parser then sees elements, attributes, and text that the application never built. Where the document is rendered as HTML or SVG, the injected markup executes as stored cross-site scripting; where it is consumed by another XML processor, the attacker can forge data that the producing application never emitted. Documents that Saxy only parses are not a vector.\n\nThis issue affects saxy: from 0.7.0 before 1.7.0."
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}
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],
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"impacts": [
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{
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"capecId": "CAPEC-250",
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"descriptions": [
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{
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"lang": "en",
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"value": "CAPEC-250 XML Injection"
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}
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]
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}
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],
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"metrics": [
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{
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"cvssV4_0": {
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"Automatable": "NOT_DEFINED",
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"Recovery": "NOT_DEFINED",
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"Safety": "NOT_DEFINED",
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"attackComplexity": "LOW",
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"attackRequirements": "PRESENT",
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"attackVector": "LOCAL",
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"baseScore": 2.1,
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"baseSeverity": "LOW",
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"privilegesRequired": "NONE",
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"providerUrgency": "NOT_DEFINED",
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"subAvailabilityImpact": "NONE",
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"subConfidentialityImpact": "LOW",
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"subIntegrityImpact": "LOW",
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"userInteraction": "NONE",
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"valueDensity": "NOT_DEFINED",
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"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N",
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"version": "4.0",
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"vulnAvailabilityImpact": "NONE",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "LOW",
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"vulnerabilityResponseEffort": "NOT_DEFINED"
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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]
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-91",
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"description": "CWE-91 XML Injection",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
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"shortName": "EEF",
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"dateUpdated": "2026-11-06T10:16:42.053Z"
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},
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"references": [
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{
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"tags": [
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"vendor-advisory",
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"related"
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],
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"url": "https://github.com/qcam/saxy/security/advisories/GHSA-mm3m-xwmf-v698"
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},
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{
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"name": "EEF CNA record for CVE-2026-66293",
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"tags": [
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"related"
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],
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"url": "https://cna.erlef.org/cves/CVE-2026-66293.html"
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},
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{
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"name": "OSV record EEF-CVE-2026-66293",
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"tags": [
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"related"
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],
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"url": "https://osv.dev/vulnerability/EEF-CVE-2026-66293"
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},
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{
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"name": "Introducing commit 7266632 in qcam/saxy",
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"tags": [
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"related"
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],
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"url": "https://github.com/qcam/saxy/commit/7266632e9407842f28ffac254c56dc41210a5690"
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},
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{
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"name": "Fix commit 6d12ee1 in qcam/saxy",
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"tags": [
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"patch"
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],
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"url": "https://github.com/qcam/saxy/commit/6d12ee12b9e32e86ef598b3f3cafccd1840b2f41"
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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},
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"title": "XML comment injection in Saxy encoder via unescaped double hyphen",
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"workarounds": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<p>Reject or rewrite the <code>--</code> sequence in untrusted text before passing it to <code>Saxy.XML.comment/1</code>, for example by replacing <code>--</code> with <code>- -</code>.</p>\n<p>Alternatively, stop emitting untrusted data as XML comments. Comments carry no semantic payload for consumers, so the text can usually be moved into an element or a CDATA section instead.</p>"
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},
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{
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"base64": false,
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"type": "text/markdown",
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"value": "Reject or rewrite the `--` sequence in untrusted text before passing it to `Saxy.XML.comment/1`, for example by replacing `--` with `- -`.\n\nAlternatively, stop emitting untrusted data as XML comments. Comments carry no semantic payload for consumers, so the text can usually be moved into an element or a CDATA section instead."
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}
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],
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"value": "Reject or rewrite the -- sequence in untrusted text before passing it to Saxy.XML.comment/1, for example by replacing -- with - -.\n\nAlternatively, stop emitting untrusted data as XML comments. Comments carry no semantic payload for consumers, so the text can usually be moved into an element or a CDATA section instead."
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}
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]
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-11-10T17:42:07.677044Z",
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"id": "CVE-2026-66293",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2026-11-10T17:42:24.114Z"
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}
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}
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]
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}
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} |