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vuln-cve/data/2026/48xxx/CVE-2026-48590.json
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{
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"cveMetadata": {
"cveId": "CVE-2026-48590",
"assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"state": "PUBLISHED",
"assignerShortName": "EEF",
"dateReserved": "2026-05-22T09:36:56.833Z",
"datePublished": "2026-08-21T09:51:25.412Z",
"dateUpdated": "2026-08-21T12:25:33.127Z"
},
"containers": {
"cna": {
"affected": [
{
"collectionURL": "https://repo.hex.pm",
"cpes": [
"cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"'Elixir.XmlBuilder'"
],
"packageName": "xml_builder",
"packageURL": "pkg:hex/xml_builder",
"product": "xml_builder",
"programFiles": [
"lib/xml_builder.ex"
],
"programRoutines": [
{
"name": "'Elixir.XmlBuilder':generate/1"
},
{
"name": "'Elixir.XmlBuilder':generate/2"
},
{
"name": "'Elixir.XmlBuilder':element/1"
},
{
"name": "'Elixir.XmlBuilder':element/2"
},
{
"name": "'Elixir.XmlBuilder':element/3"
}
],
"repo": "https://github.com/joshnuss/xml_builder",
"vendor": "joshnuss",
"versions": [
{
"lessThan": "2.4.1",
"status": "affected",
"version": "0.0.1",
"versionType": "semver"
}
]
},
{
"collectionURL": "https://github.com",
"cpes": [
"cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*"
],
"defaultStatus": "unaffected",
"modules": [
"'Elixir.XmlBuilder'"
],
"packageName": "joshnuss/xml_builder",
"packageURL": "pkg:github/joshnuss/xml_builder",
"product": "xml_builder",
"programFiles": [
"lib/xml_builder.ex"
],
"programRoutines": [
{
"name": "'Elixir.XmlBuilder':generate/1"
},
{
"name": "'Elixir.XmlBuilder':generate/2"
},
{
"name": "'Elixir.XmlBuilder':element/1"
},
{
"name": "'Elixir.XmlBuilder':element/2"
},
{
"name": "'Elixir.XmlBuilder':element/3"
}
],
"repo": "https://github.com/joshnuss/xml_builder",
"vendor": "joshnuss",
"versions": [
{
"lessThan": "d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859",
"status": "affected",
"version": "9fb49131ad3ee146a4c9db9bc175bdffe32e30a0",
"versionType": "git"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:joshnuss:xml_builder:*:*:*:*:*:*:*:*",
"versionEndExcluding": "2.4.1",
"versionStartIncluding": "0.0.1",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
],
"operator": "AND"
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Peter Ullrich"
},
{
"lang": "en",
"type": "remediation developer",
"value": "Joshua Nussbaum"
},
{
"lang": "en",
"type": "coordinator",
"value": "Jonatan Männchen / EEF"
}
],
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "<p>XML Injection vulnerability in joshnuss xml_builder (<code>XmlBuilder</code> module) allows Content Spoofing, XML Injection.</p>\n<p>This vulnerability is associated with program files <code>lib/xml_builder.ex</code> and program routines <code>XmlBuilder.generate/1</code>, <code>XmlBuilder.generate/2</code>, <code>XmlBuilder.element/1</code>, <code>XmlBuilder.element/2</code>, <code>XmlBuilder.element/3</code>.</p>\n<p>Element names, attribute names, and doctype identifiers are interpolated verbatim into the serialized XML output without validation or escaping of structural characters (<code>&lt;</code>, <code>&gt;</code>, <code>\"</code>, <code>'</code>, <code>&amp;</code>). An attacker who can influence a name argument (for example, an element name derived from a JSON object key or an HTTP form field name) can inject arbitrary XML markup including extra elements, comments, and event-handler attributes into the output document.</p>\n<p>This issue affects xml_builder: from 0.0.1 before 2.4.1.</p>"
},
{
"base64": false,
"type": "text/markdown",
"value": "XML Injection vulnerability in joshnuss xml_builder (`XmlBuilder` module) allows Content Spoofing, XML Injection.\n\nThis vulnerability is associated with program files `lib/xml_builder.ex` and program routines `XmlBuilder.generate/1`, `XmlBuilder.generate/2`, `XmlBuilder.element/1`, `XmlBuilder.element/2`, `XmlBuilder.element/3`.\n\nElement names, attribute names, and doctype identifiers are interpolated verbatim into the serialized XML output without validation or escaping of structural characters (`<`, `>`, `\"`, `'`, `&`). An attacker who can influence a name argument (for example, an element name derived from a JSON object key or an HTTP form field name) can inject arbitrary XML markup including extra elements, comments, and event-handler attributes into the output document.\n\nThis issue affects xml_builder: from 0.0.1 before 2.4.1."
}
],
"value": "XML Injection vulnerability in joshnuss xml_builder (XmlBuilder module) allows Content Spoofing, XML Injection.\n\nThis vulnerability is associated with program files lib/xml_builder.ex and program routines XmlBuilder.generate/1, XmlBuilder.generate/2, XmlBuilder.element/1, XmlBuilder.element/2, XmlBuilder.element/3.\n\nElement names, attribute names, and doctype identifiers are interpolated verbatim into the serialized XML output without validation or escaping of structural characters (<, >, \", ', &). An attacker who can influence a name argument (for example, an element name derived from a JSON object key or an HTTP form field name) can inject arbitrary XML markup including extra elements, comments, and event-handler attributes into the output document.\n\nThis issue affects xml_builder: from 0.0.1 before 2.4.1."
}
],
"impacts": [
{
"capecId": "CAPEC-250",
"descriptions": [
{
"lang": "en",
"value": "CAPEC-250 XML Injection"
}
]
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "LOCAL",
"baseScore": 2.1,
"baseSeverity": "LOW",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "LOW",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-91",
"description": "CWE-91 XML Injection (aka Blind XPath Injection)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
"shortName": "EEF",
"dateUpdated": "2026-08-21T09:51:25.412Z"
},
"references": [
{
"tags": [
"vendor-advisory",
"related"
],
"url": "https://github.com/joshnuss/xml_builder/security/advisories/GHSA-r82p-3q2p-728w"
},
{
"tags": [
"related"
],
"url": "https://cna.erlef.org/cves/CVE-2026-48590.html"
},
{
"tags": [
"related"
],
"url": "https://osv.dev/vulnerability/EEF-CVE-2026-48590"
},
{
"tags": [
"patch"
],
"url": "https://github.com/joshnuss/xml_builder/commit/d5c0aec32a8eecbb440fb9bbb0f59d4d188d5859"
}
],
"source": {
"discovery": "EXTERNAL"
},
"title": "Element and Attribute Names Injected Verbatim into XML Output in xml_builder"
},
"adp": [
{
"references": [
{
"url": "https://github.com/joshnuss/xml_builder/security/advisories/GHSA-r82p-3q2p-728w",
"tags": [
"exploit"
]
}
],
"metrics": [
{
"other": {
"type": "ssvc",
"content": {
"timestamp": "2026-08-21T12:24:58.189871Z",
"id": "CVE-2026-48590",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
}
],
"title": "CISA ADP Vulnrichment",
"providerMetadata": {
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP",
"dateUpdated": "2026-08-21T12:25:33.127Z"
}
}
]
}
}
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