https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-02T12:08:44.578412+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-41305 CVE-2026-41305 — PostCSS has XSS via Unescaped </style> in its CSS Stringify Output 2026-10-02T12:08:45.459993+00:00

Affected: postcss

PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Versions prior to 8.5.10 do not escape `</style>` sequences when stringifying CSS ASTs. When user-submitted CSS is parsed and re-stringified for embedding in HTML `<style>` tags, `</style>` in CSS values breaks out of the style context, enabling XSS. Version 8.5.10 fixes the issue.