146 lines
6.0 KiB
JSON
146 lines
6.0 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-2026-48126",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-05-20T18:46:58.291Z",
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"datePublished": "2026-05-26T16:44:09.104Z",
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"dateUpdated": "2026-05-26T17:27:56.507Z"
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},
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"containers": {
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"cna": {
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"title": "Algernon: Host header path traversal in --domain mode reads files and runs Lua from parent dir",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-22",
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"lang": "en",
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"description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
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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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"descriptions": [
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{
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"cweId": "CWE-23",
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"lang": "en",
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"description": "CWE-23: Relative Path Traversal",
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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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"descriptions": [
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{
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"cweId": "CWE-644",
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"lang": "en",
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"description": "CWE-644: Improper Neutralization of HTTP Headers for Scripting Syntax",
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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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"metrics": [
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 8.2,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "LOW",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/xyproto/algernon/security/advisories/GHSA-jc3j-x6pg-4hmv",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/xyproto/algernon/security/advisories/GHSA-jc3j-x6pg-4hmv"
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}
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],
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"affected": [
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{
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"vendor": "xyproto",
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"product": "algernon",
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"versions": [
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{
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"version": "< 1.17.8",
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"status": "affected"
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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": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-05-26T16:44:09.104Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "Algernon is a small self-contained pure-Go web server. Prior to 1.17.8, when algernon is started with --domain (or --letsencrypt, which silently turns on --domain at engine/flags.go:372), the request handler resolves the served directory by joining the configured --dir with the value of the client-supplied Host header. The join is performed by filepath.Join with no validation, so a Host: .. header walks one level above the document root. Subsequent file resolution then exposes everything in that parent directory — arbitrary file read, full directory listing, and, if any .lua file is present, server-side Lua execution. This vulnerability is fixed in 1.17.8."
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}
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],
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"source": {
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"advisory": "GHSA-jc3j-x6pg-4hmv",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/xyproto/algernon/security/advisories/GHSA-jc3j-x6pg-4hmv",
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"tags": [
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"exploit"
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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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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2026-05-26T17:27:29.590530Z",
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"id": "CVE-2026-48126",
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"options": [
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{
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"Exploitation": "poc"
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},
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{
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"Automatable": "yes"
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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": "2026-05-26T17:27:56.507Z"
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}
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}
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]
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}
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} |