{"id":"CVE-2026-107380","state":"PUBLISHED","title":"enshrined/svg-sanitize: Stored XSS via DTD Entity / HTML5 Named Character Reference Collision","description":"savg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, svg-sanitizer's isHrefSafeValue() validates an SVG href after XML DTD entity expansion, but saveXML() serializes the original entity reference after removing the DTD declaration. A crafted entity such as Tab can appear to the sanitizer as a safe fragment prefix while HTML5 Named Character Reference resolution during inline HTML rendering later converts the surviving reference to whitespace, exposing a javascript: URL. When an application embeds the sanitized SVG inline, a user who activates the link can cause script to execute in the embedding page's origin. This issue is fixed in version 1.0.0.","publishedAt":"2026-10-08T18:06:14.107Z","updatedAt":"2026-10-09T15:14:45.596Z","severity":{"score":5.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["darylldoyle svg-sanitizer"],"affected":[{"vendor":"darylldoyle","product":"svg-sanitizer","versions":[{"version":"< 1.0.0","status":"affected"}]}],"references":["https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-9rjx-3jch-6vjf","https://github.com/darylldoyle/svg-sanitizer/commit/23877db7e76f1e1df5c3e65ab30239219c3d2867","https://github.com/darylldoyle/svg-sanitizer/releases/tag/1.0.0"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/107xxx/CVE-2026-107380.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-107380","state":"PUBLISHED","datePublished":"2026-10-08T18:06:14.107Z","dateUpdated":"2026-10-09T15:14:45.596Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-10-07T21:07:54.988Z"},"containers":{"cna":{"title":"enshrined/svg-sanitize: Stored XSS via DTD Entity / HTML5 Named Character Reference Collision","descriptions":[{"lang":"en","value":"savg-sanitizer is a PHP SVG/XML sanitizer. Prior to 1.0.0, svg-sanitizer's isHrefSafeValue() validates an SVG href after XML DTD entity expansion, but saveXML() serializes the original entity reference after removing the DTD declaration. A crafted entity such as Tab can appear to the sanitizer as a safe fragment prefix while HTML5 Named Character Reference resolution during inline HTML rendering later converts the surviving reference to whitespace, exposing a javascript: URL. When an application embeds the sanitized SVG inline, a user who activates the link can cause script to execute in the embedding page's origin. This issue is fixed in version 1.0.0."}],"affected":[{"vendor":"darylldoyle","product":"svg-sanitizer","versions":[{"version":"< 1.0.0","status":"affected"}]}],"references":[{"url":"https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-9rjx-3jch-6vjf","name":"https://github.com/darylldoyle/svg-sanitizer/security/advisories/GHSA-9rjx-3jch-6vjf","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/darylldoyle/svg-sanitizer/commit/23877db7e76f1e1df5c3e65ab30239219c3d2867","name":"https://github.com/darylldoyle/svg-sanitizer/commit/23877db7e76f1e1df5c3e65ab30239219c3d2867","tags":["x_refsource_MISC"]},{"url":"https://github.com/darylldoyle/svg-sanitizer/releases/tag/1.0.0","name":"https://github.com/darylldoyle/svg-sanitizer/releases/tag/1.0.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.4,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-10-08T18:06:14.107Z"},"source":{"advisory":"GHSA-9rjx-3jch-6vjf","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-08T20:23:16.348451Z","id":"CVE-2026-107380","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-09T15:14:45.596Z"}}]}}}