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

NPM: ApostropheCMS: Mutation-XSS / allowedTags bypass via literal solidus close vulnerability discovered by ? in WordPress Npm sanitize-html versions = 2.17.5...

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

Summary A mutation-XSS / allowedTags bypass: when textarea or xmp is included in allowedTags, an input containing a literal a solidus right after the RCDATA end-tag name lets non-allowed markup such as pass through sanitizeHtml live and unescaped, even though img/onerror are not in the allowlist....

CVE-2026-63670 ApostropheCMS: Mutation-XSS / allowedTags bypass via literal `</textarea/>` solidus close

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 literal solidus after the raw-text end-tag name is treated as te...

CVE-2026-63670 ApostropheCMS: Mutation-XSS / allowedTags bypass via literal `</textarea/>` solidus close

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 literal solidus after the raw-text end-tag name is treated as te...