CVE-2021-33587
HIGH7.5EPSS 0.20%Denial of service in css-what
Published: 6/7/2021Modified: 4/28/2026
Description
The css-what package 4.0.0 through 5.0.0 for Node.js does not ensure that attribute parsing has Linear Time Complexity relative to the size of the input.
Affected packages (3)
- Debian/node-css-whatfrom 0, < 4.0.0-3+deb11u1
- Debian/node-css-whatfrom 0, < 2.1.0-1+deb10u1
- npm/css-what>= 4.0.0, < 5.0.1
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 (7)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2021-33587
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2021-33587
- PATCHhttps://github.com/fb55/css-what
- WEBhttps://github.com/fb55/css-what/commit/4cdaacfd0d4b6fd00614be030da0dea6c2994655
- WEBhttps://github.com/fb55/css-what/releases/tag/v5.0.1
- WEBhttps://lists.debian.org/debian-lts-announce/2023/03/msg00001.html
- WEBhttps://security.netapp.com/advisory/ntap-20210706-0007