{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-113657","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-20T14:27:46.641Z","datePublished":"2026-10-20T16:54:12.995Z","dateUpdated":"2026-10-20T17:08:06.854Z"},"containers":{"cna":{"title":"ApostropheCMS sanitize-html: SMIL animation namespace-prefix bypass allows javascript: URI injection (XSS)","problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-374f-7chj-9948","tags":["x_refsource_CONFIRM"],"url":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-374f-7chj-9948"},{"name":"https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce","tags":["x_refsource_MISC"],"url":"https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce"},{"name":"https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350","tags":["x_refsource_MISC"],"url":"https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350"},{"name":"https://github.com/apostrophecms/apostrophe/releases/tag/sanitize-html@2.18.0","tags":["x_refsource_MISC"],"url":"https://github.com/apostrophecms/apostrophe/releases/tag/sanitize-html@2.18.0"}],"affected":[{"vendor":"apostrophecms","product":"apostrophe","versions":[{"version":"< 4.33.0","status":"affected"}]},{"vendor":"apostrophecms","product":"sanitize-html","versions":[{"version":">= 2.17.7, < 2.18.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-20T16:54:12.995Z"},"descriptions":[{"lang":"en","value":"ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API. From sanitize-html 2.17.7 until 2.18.0, an application configuration that permits namespace-prefixed SVG animation elements and the relevant URL-targeting attributes can bypass the SMIL URL protection because prefixed tag names do not match the unprefixed animation-element check. The bypass can rewrite a link destination to an unsafe URI after the sanitized SVG is rendered, with script execution occurring when a user activates the affected link; the default sanitizer configuration is not unconditionally affected. This issue is fixed in sanitize-html 2.18.0."}],"source":{"advisory":"GHSA-374f-7chj-9948","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-374f-7chj-9948","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-20T17:07:42.782981Z","id":"CVE-2026-113657","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":"2026-10-20T17:08:06.854Z"}}]}}