CVE-2022-21222
HIGH7.5EPSS 0.27%css-what vulnerable to ReDoS due to use of insecure regular expression
Published: 10/1/2022Modified: 4/28/2026
Description
The package css-what before 2.1.3 are vulnerable to Regular Expression Denial of Service (ReDoS) due to the usage of insecure regular expression in the re_attr variable of index.js. The exploitation of this vulnerability could be triggered via the parse function.
Affected packages (2)
- Debian/node-css-whatfrom 0, < 4.0.0-3+deb11u1
- npm/css-whatfrom 0, < 2.1.3
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
References (8)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2022-21222
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2022-21222
- PATCHhttps://github.com/fb55/css-what
- WEBhttps://github.com/fb55/css-what/blob/a38effd5a8f5506d75c7f8f13cbd8c76248a3860/index.js#23L12
- WEBhttps://github.com/fb55/css-what/blob/a38effd5a8f5506d75c7f8f13cbd8c76248a3860/index.js%23L12
- WEBhttps://github.com/fb55/css-what/commit/dc510929790da6617e7aa93a616498b22f6a6b72
- WEBhttps://lists.debian.org/debian-lts-announce/2023/03/msg00001.html
- WEBhttps://security.snyk.io/vuln/SNYK-JS-CSSWHAT-3035488