Fiche vulnérabilité
CVE-2026-69153 : faille moyenne postcss postcss (CVSS 5.3)
Description
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 8.5.19, if from is unset, an attacker can cause PreviousMap.loadFile() to read an unintended source-map file by supplying an absolute or directory-traversal sourceMappingURL. The resulting map’s sources and sourcesContent may then be exposed to the application. This issue is fixed in version 8.5.19.
En bref
- Sévérité
- Moyenne (CVSS 5.3)
- Vecteur CVSS
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Exploitation active
- Non signalée par la CISA
- Publication
- 3 août 2026
- Dernière mise à jour
- 5 août 2026
Produits concernés
- postcss postcss