ApostropheCMS: Mutation-XSS / allowedTags bypass via literal `</textarea/>` solidus close

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-63670 · Microsoft / collected KEV context

EUVD-2026-60440

GHSA-jxwj-j7wr-gfrw

cve-program · CVE-2026-63670

• https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-jxwj-j7wr-gfrw
• https://github.com/apostrophecms/apostrophe/pull/5501
• https://github.com/apostrophecms/apostrophe/commit/eae1fb2b72ec5d1c27d0977509c6482a0408f725

euvd · EUVD-2026-60440

• https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-jxwj-j7wr-gfrw
• https://github.com/apostrophecms/apostrophe/pull/5501
• https://github.com/apostrophecms/apostrophe/commit/eae1fb2b72ec5d1c27d0977509c6482a0408f725

nvd · CVE-2026-63670

• https://github.com/apostrophecms/apostrophe/commit/eae1fb2b72ec5d1c27d0977509c6482a0408f725
• https://github.com/apostrophecms/apostrophe/pull/5501
• https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-jxwj-j7wr-gfrw

osv · GHSA-jxwj-j7wr-gfrw

• https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-jxwj-j7wr-gfrw
• https://nvd.nist.gov/vuln/detail/CVE-2026-63670
• https://github.com/apostrophecms/apostrophe/pull/5501
• https://github.com/apostrophecms/apostrophe/commit/eae1fb2b72ec5d1c27d0977509c6482a0408f725
• https://github.com/apostrophecms/apostrophe

• ApostropheCMS is an open-source Node.js content management system. Prior to 2.17.6, sanitizeHtml() can pass disallowed executable markup through packages/sanitize-html/index.js when textarea or xmp is included in allowedTags because a liter… · Advisory content revised · 5 Nov 2026