CVE-2021-23382

Published: Apr 26, 2021Modified: Jun 17, 2026

7.5

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

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=(.*).

Affected (2)

Products: Postcss: Postcss

1 product

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Postcss Postcss	Before 7.0.36
Postcss Postcss	From 8.0.0 to 8.2.13

Related CWEs

Inefficient Regular Expression Complexity

The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.

References (6)

https://github.com/postcss/postcss/commit/2b1d04c867995e55124e0a165b7c6622c1735956

Source: report@snyk.io

PatchThird Party Advisory

https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1255641

Source: report@snyk.io

ExploitPatchThird Party Advisory

https://snyk.io/vuln/SNYK-JS-POSTCSS-1255640

Source: report@snyk.io

ExploitPatchThird Party Advisory

https://github.com/postcss/postcss/commit/2b1d04c867995e55124e0a165b7c6622c1735956

Source: af854a3a-2127-422b-91ae-364da2661108

PatchThird Party Advisory

https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1255641

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitPatchThird Party Advisory

https://snyk.io/vuln/SNYK-JS-POSTCSS-1255640

Source: af854a3a-2127-422b-91ae-364da2661108

ExploitPatchThird Party Advisory

Timeline

No history available yet.