postcss

About this tag
PostCSS is a popular tool for transforming CSS with JavaScript plugins, widely used in modern web development build pipelines. On WindowsForum.com, discussions about PostCSS focus on security vulnerabilities, particularly CVE-2023-44270, a parsing bug in versions prior to 8.4.31 that allows untrusted CSS to hide live rules inside comments. This issue undermines linters and security tools relying on PostCSS for safe parsing. The forum provides patch guides and troubleshooting advice for developers using PostCSS in automated build and security pipelines. Topics also cover best practices for updating PostCSS to avoid parser confusion and ensure reliable CSS processing in enterprise and open-source projects.

  1. PostCSS CVE-2023-44270: Patch Guide for Untrusted CSS Parsing

    PostCSS versions prior to 8.4.31 contain a subtle but consequential parsing bug (tracked as CVE-2023-44270) that can let attacker-supplied CSS hide live rules and properties inside what appears to be a comment — a behavior that undermines linters and other tools that rely on PostCSS to safely...