VulnerabilityModified
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.
HIGH 7.5EPSS 2.51%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.51%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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=(.*).
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.51% probability · 84th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1333
- Affected
- postcss/postcss
- Source
- report@snyk.io
References
- https://github.com/postcss/postcss/commit/2b1d04c867995e55124e0a165b7c6622c1735956Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1255641Exploit, Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-POSTCSS-1255640Exploit, Patch, Third Party Advisory
- https://github.com/postcss/postcss/commit/2b1d04c867995e55124e0a165b7c6622c1735956Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1255641Exploit, Patch, Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-POSTCSS-1255640Exploit, Patch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.