This page tracks the Debian fix status. The vulnerability itself is described on the main CVE page. View CVE-2026-69153 →

DEBIAN-CVE-2026-69153

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,...

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) OSV

Affected packages

Debian:12 node-postcss

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:13 node-postcss

[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}]

Debian:14 node-postcss

[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.5.23+~cs10.2.23-1"}]}]

References

advisory security-tracker.debian.org