{"schemaVersion":3,"id":"CVE-2026-113657","aliases":["GHSA-374f-7chj-9948","CGA-wc6m-p3mq-pc7v","CGA-723m-8w73-5m27"],"status":"published","duplicateOf":null,"title":null,"description":"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.","dates":{"published":"2026-10-20T16:54:12.995Z","modified":"2026-10-20T17:08:06.854Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":3.7,"severity":"low","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":3.7,"severity":"low","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":3.7,"severity":"low","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Npm","score":3.7,"severity":"low","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N","exploitability":3.1,"impact":4.2,"computed":true}]},"epss":{"probability":0.00313,"percentile":0.22911,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-21T00:00:00.000Z","score":0.00313,"percentile":0.22911}],"last30":[{"date":"2026-10-21T00:00:00.000Z","score":0.00313,"percentile":0.22911}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","description":"The product does not 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4.33.0","eol":null,"hubHref":"/vendor/apostrophecms/apostrophe"},{"vendor":"apostrophecms","product":"sanitize-html","name":"sanitize-html","label":"sanitize-html","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 2.17.7, < 2.18.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2.17.7, < 2.18.0","eol":null,"hubHref":"/vendor/apostrophecms/sanitize-html"},{"vendor":"Npm","product":"sanitize-html","name":"sanitize-html","label":"sanitize-html","ecosystem":"Npm","cpePart":null,"purl":"pkg:npm/sanitize-html","purlType":"npm","versions":[{"text":"≥ 2.17.7, < 2.18.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2.17.7, < 2.18.0","eol":null,"hubHref":null}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-374f-7chj-9948","label":"github.com/apostrophecms/apostrophe/security/advisories/GHSA-374f-7chj-9948","hostname":"github.com","tags":["X Refsource CONFIRM","WEB"]},{"url":"https://github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce","label":"github.com/apostrophecms/apostrophe/commit/9500b8b0e1d630d5e07fbb5fd2c25ed0943845ce","hostname":"github.com","tags":["X Refsource MISC","WEB"]},{"url":"https://github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350","label":"github.com/apostrophecms/apostrophe/commit/f84fd41cbf6c22eb8d0008fc9c25df1f7130b350","hostname":"github.com","tags":["X Refsource MISC","WEB"]},{"url":"https://github.com/apostrophecms/apostrophe/releases/tag/sanitize-html@2.18.0","label":"github.com/apostrophecms/apostrophe/releases/tag/sanitize-html@2.18.0","hostname":"github.com","tags":["X Refsource MISC","WEB"]},{"url":"https://github.com/apostrophecms/apostrophe","label":"github.com/apostrophecms/apostrophe","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-20T16:54:12.995Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-20T17:08:06.854Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":15,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T03:25:13.754Z","stale":false,"partial":false}}