{"id":"CVE-2026-84371","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-84371","summary":"ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API. From version 1.9.0 until version 2.17.7, packages/sanitize-html/index.js…","details":"ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer with a clear API. From version 1.9.0 until version 2.17.7, packages/sanitize-html/index.js validates an animation value attribute as one flat URL and does not recognize that attributeName selecting href or xlink:href gives the sibling values, from, to, or by attribute SVG SMIL URL semantics. In configurations that allow the animate, animateColor, animateMotion, animateTransform, or set elements, a values list can begin with a safe fragment and contain a later executable destination that survives allowedSchemesAppliedToAttributes checking. When the sanitized SVG is rendered, the browser can copy that later destination into the live link, and a victim who activates the link can execute script in the application's origin. This issue is fixed in version 2.17.7.","published":"2026-09-01T20:51:10.441Z","modified":"2026-09-01T20:51:10.441Z","cvss":{"score":5.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/apostrophecms/apostrophe/pull/5552","label":"apostrophecms/apostrophe#5552"},"references":[{"type":"WEB","url":"https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-g8qq-57p8-ggw5"},{"type":"WEB","url":"https://github.com/apostrophecms/apostrophe/pull/5552"},{"type":"WEB","url":"https://github.com/apostrophecms/apostrophe/commit/1135516a1a4a8f9638641c460488a43d8af20081"},{"type":"WEB","url":"https://github.com/apostrophecms/apostrophe/commit/38ff1106c8176b16c2da9872acd9b449adcbb949"},{"type":"WEB","url":"https://github.com/apostrophecms/apostrophe/blob/main/packages/sanitize-html/CHANGELOG.md"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-01T20:51:10.441Z"}}