Directory Traversal

Overview postcss is a PostCSS is a tool for transforming styles with JS plugins. Affected versions of this package are vulnerable to Directory Traversal in the PreviousMap.loadFile method of lib/previous-map.js, which nests its traversal guard inside an if cssFile branch that is skipped when the...

PostCSS: Path Traversal in Previous Source Map Auto-Loading (sourceMappingURL) leads to Arbitrary .map File Disclosure

Vulnerability Details File: lib/previous-map.js Line: 87-98 loadFile, 129-144 loadMap Root Cause PostCSS auto-detects a / sourceMappingURL=... / comment inside the CSS text it is asked to parse and, unless the caller explicitly passes map: false, attempts to load that path from disk as a "previou...

GHSA-R28C-9Q8G-F849 PostCSS: Path Traversal in Previous Source Map Auto-Loading (sourceMappingURL) leads to Arbitrary .map File Disclosure

Vulnerability Details File: lib/previous-map.js Line: 87-98 loadFile, 129-144 loadMap Root Cause PostCSS auto-detects a / sourceMappingURL=... / comment inside the CSS text it is asked to parse and, unless the caller explicitly passes map: false, attempts to load that path from disk as a "previou...

PT-2026-64149

Name of the Vulnerable Software and Affected Versions PostCSS versions 8.5.11 and earlier Description PostCSS processes CSS files by transforming them into an Abstract Syntax Tree. The PreviousMap component parses / sourceMappingURL=PATH / comments from CSS strings passed to the process function...

GHSA-566M-QJ78-RWW5 Regular Expression Denial of Service in postcss

The package postcss versions before 7.0.36 or between 8.0.0 and 8.2.13 are vulnerable to Regular Expression Denial of Service ReDoS via getAnnotationURL and loadAnnotation in lib/previous-map.js. The vulnerable regexes are caused mainly by the sub-pattern regex /\s sourceMappingURL=. PoC js var...

CVE-2021-23382

The package postcss before 8.2.13 are vulnerable to Regular Expression Denial of Service ReDoS via getAnnotationURL and loadAnnotation in lib/previous-map.js. The vulnerable regexes are caused mainly by the sub-pattern /\s sourceMappingURL=...

CVE-2021-23382

The package postcss before 8.2.13 are vulnerable to Regular Expression Denial of Service ReDoS via getAnnotationURL and loadAnnotation in lib/previous-map.js. The vulnerable regexes are caused mainly by the sub-pattern /\s sourceMappingURL=...

PT-2021-15478

Name of the Vulnerable Software and Affected Versions postcss versions prior to 7.0.36 postcss versions 8.0.0 through 8.2.13 Description The issue is related to Regular Expression Denial of Service ReDoS via the getAnnotationURL and loadAnnotation functions in lib/previous-map.js. The vulnerable...