Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| postcss / postcss | affected < 8.5.18 |
CWE
CWE-22
References
- https://github.com/postcss/postcss/security/advisories/GHSA-r28c-9q8g-f849
- https://github.com/postcss/postcss/commit/95663d3eb7ba26f4854dd19d3b4f4425760cf56c
- https://github.com/postcss/postcss/releases/tag/8.5.18
ADP enrichment
No English description supplied.