CVE-2026-69153mediumCWE-200CWE-22

CVE-2026-69153: fallo de gravedad media en postcss

PostCSS: incomplete fix of CVE-2026-45623 — attacker-controlled sourceMappingURL reads arbitrary .map files when `from` is unset

Publicada el

Seguir esta CVE+ Monitorear postcss+ Monitorear node-postcss

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 6.3epss 0.5%
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.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Productos afectados
postcss · postcss
CVEs relacionadas — postcss

En el mismo producto, de las más peligrosas a las menos.

CVE-2026-45623HIGHPostCSS: Arbitrary file read and information disclosure via attacker-controlled sourceMappingURL in CSS commentsEPSS 0.6%CVE-2026-73646HIGHPostCSS: Path Traversal in Previous Source Map Auto-Loading (sourceMappingURL) leads to Arbitrary .map File DisclosureEPSS 0.5%CVE-2026-41305MEDIUMPostCSS has XSS via Unescaped </style> in its CSS Stringify OutputEPSS 0.2%