CVE catalog
CVE-2021-33587
node-css-what: CVE-2021-33587
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.04% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | node-css-what | sid | 6.2.2-3 | fixed |
| Debian | node-css-what | forky | 6.2.2-3 | fixed |
| Debian | node-css-what | trixie | 6.1.0-5 | fixed |
| Debian | node-css-what | bookworm | 6.1.0-5 | fixed |
| Ubuntu | node-css-what | pro | 3.1.0-2 | vulnerable |
| Ubuntu | node-css-what | pro | 3.2.0-1 | vulnerable |
| Ubuntu | node-css-what | pro | 3.2.1-1 | vulnerable |
| Ubuntu | node-css-what | pro | 3.2.1-1ubuntu0.1~esm1 | fixed |
| Ubuntu | node-css-what | 18.04 | 2.1.0-1 | vulnerable |
| Ubuntu | node-css-what | 18.04 | 2.1.0-1+deb10u1build0.18.04.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | node-css-what | source | sid | 5.0.1-1 | not yet assigned | Not reported | [989264] |
| Debian | node-css-what | source | forky | 5.0.1-1 | not yet assigned | Not reported | [989264] |
| Debian | node-css-what | source | trixie | 5.0.1-1 | not yet assigned | Not reported | [989264] |
| Debian | node-css-what | source | bookworm | 5.0.1-1 | not yet assigned | Not reported | [989264] |
| Ubuntu | node-css-what | deb | pro | 3.2.1-1ubuntu0.1~esm1 | Not reported | USN-6065-1 | Not reported |
| Ubuntu | node-css-what | deb | 18.04 | 2.1.0-1+deb10u1build0.18.04.1 | Not reported | USN-6065-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [node-css-what]Fixed
Details (2)
6.1.0-5· all · bookwormFixed · Fixed:
5.0.1-1dsa · node-css-what · debian · bookworm; dsa · node-css-what · debian · 12
6.1.0-5· all · bookwormFixed · Fixed:
5.0.1-1dsa · node-css-what · debian · bookworm; dsa · node-css-what · debian · 12
[Debian 13 (Trixie)]
- [node-css-what]Fixed
Details (2)
6.1.0-5· all · trixieFixed · Fixed:
5.0.1-1dsa · node-css-what · debian · 13
6.1.0-5· all · trixieFixed · Fixed:
5.0.1-1dsa · node-css-what · debian · 13
Observed:
References
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-33587]
- [https://osv.dev/vulnerability/DLA-3350-1]
- [https://osv.dev/vulnerability/USN-6065-1]
- [https://security-tracker.debian.org/tracker/CVE-2021-33587]
- [https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-33587.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-1350.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]