Technology · npm
postcss (npm) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 5 vulnerabilities in postcss (npm): 0 in the last 7 days and 3 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-73646, was published on 17 August 2026.
- Last 7 days
- 0
- Last 90 days
- 3
- Critical, all time
- 0
- Exploited in the wild
- 0
About postcss (npm)
A tool for transforming CSS with JavaScript plugins.
Latest postcss (npm) vulnerabilities
- CVE-2026-73646: PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract…highCVSS 7.5EPSS 0.5%
- CVE-2026-69153: PostCSS path traversal in sourceMappingURL parsingmediumCVSS 4EPSS 0.4%
- CVE-2026-45623: PostCSS arbitrary file read via sourceMappingURL path traversalhighCVSS 7.5EPSS 0.6%
- CVE-2026-41305: PostCSS has XSS via Unescaped </style> in its CSS Stringify OutputmediumCVSS 6.1EPSS 0.3%
- CVE-2023-44270: PostCSS line return parsing error in CSS tokenizationlowCVSS 3.1EPSS 0.8%
Most severe postcss (npm) vulnerabilities
Exploited in the wild first, then by severity and CVSS score.
- CVE-2026-45623: PostCSS arbitrary file read via sourceMappingURL path traversalhighCVSS 7.5EPSS 0.6%
- CVE-2026-73646: PostCSS takes a CSS file and provides an API to analyze and modify its rules by transforming the rules into an Abstract…highCVSS 7.5EPSS 0.5%
- CVE-2026-41305: PostCSS has XSS via Unescaped </style> in its CSS Stringify OutputmediumCVSS 6.1EPSS 0.3%
- CVE-2026-69153: PostCSS path traversal in sourceMappingURL parsingmediumCVSS 4EPSS 0.4%
- CVE-2023-44270: PostCSS line return parsing error in CSS tokenizationlowCVSS 3.1EPSS 0.8%
Vulnerabilities per week
The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 29 Jun 2026 | 0 | 0 | |
| 6 Jul 2026 | 0 | 0 | |
| 13 Jul 2026 | 0 | 0 | |
| 20 Jul 2026 | 0 | 0 | |
| 27 Jul 2026 | 1 | 0 | |
| 3 Aug 2026 | 1 | 0 | |
| 10 Aug 2026 | 0 | 0 | |
| 17 Aug 2026 | 1 | 0 | |
| 24 Aug 2026 | 0 | 0 | |
| 31 Aug 2026 | 0 | 0 | |
| 7 Sep 2026 | 0 | 0 | |
| 14 Sep 2026 | 0 | 0 | |
| 21 Sep 2026 | 0 | 0 |
How this is built
Junglewise Threat Intelligence collects vulnerabilities from NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories, and matches each one to the technologies and vendors it affects. Dates are the date a vulnerability was published, in UTC.
The pages are rebuilt from the database every hour. Frozen weekly and monthly reports never change once published, so they can be cited.
Use this data
The same data is at https://junglewise.ai/threats/technologies/postcss.json, for scripts and language models. It is free to reuse under CC BY 4.0 with a link back to this page.
Cite as: Junglewise Threat Intelligence, "postcss (npm) vulnerabilities", https://junglewise.ai/threats/technologies/postcss, 26 September 2026.