node-postcss: PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstra...
CVE-2026-73646 is fixed in node-postcss on 1 platform by DEBIAN-CVE-2026-73646 (version 8.5.19+~cs10.2.23-1), released August 17, 2026. It is not reported as exploited. Patch Radar priority: High.
PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract Syntax Tree. Prior to 8.5.18, lib/previous-map.js loadMap() passes attacker-controlled sourceMappingURL values to join(dirname(opts.from), annotation), and loadFile() permits traversed or absolute .map paths, allowing untrusted CSS processed without map: false to disclose sourcesContent from arbitrary reachable .map files through result.map. This issue is fixed in version 8.5.18.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| node-postcss · Debian 14 | 8.5.19+~cs10.2.23-1 | DEBIAN-CVE-2026-73646 | Aug 17, 2026 |
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