Technology · npm
postcss (npm) vulnerabilities
Updated . Rebuilt every hour.
Junglewise Threat Intelligence has tracked 7 vulnerabilities in postcss (npm): 0 in the last 7 days and 1 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. Nothing was published in the last eight weeks.
- Last 7 days
- 0
- Last 90 days
- 1
- Critical, all time
- 0
- Exploited in the wild
- 0
About postcss (npm)
JavaScript tool for transforming CSS with plugins.
Latest postcss (npm) vulnerabilities
- CVE-2026-73646: PostCSS path traversal in source map auto-loadinghighCVSS 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%
- CVE-2021-23382: PostCSS regular expression denial of service in previous-maplowCVSS 3.1EPSS 2.6%
- CVE-2021-23368: postcss Regular Expression Denial of ServicelowCVSS 3.1EPSS 3.5%
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 path traversal in source map auto-loadinghighCVSS 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-2021-23368: postcss Regular Expression Denial of ServicelowCVSS 3.1EPSS 3.5%
- CVE-2021-23382: PostCSS regular expression denial of service in previous-maplowCVSS 3.1EPSS 2.6%
- CVE-2023-44270: PostCSS line return parsing error in CSS tokenizationlowCVSS 3.1EPSS 0.8%
Vulnerabilities per week
Nothing was published in the last eight weeks. The last 13 weeks, by the week each vulnerability was published.
| Week of | Bar | Vulns | Critical |
|---|---|---|---|
| 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 | |
| 28 Sep 2026 | 0 | 0 | |
| 5 Oct 2026 | 0 | 0 | |
| 12 Oct 2026 | 0 | 0 | |
| 19 Oct 2026 | 0 | 0 | |
| 26 Oct 2026 | 0 | 0 | |
| 2 Nov 2026 | 0 | 0 | |
| 9 Nov 2026 | 0 | 0 |
Embed a badge
A live badge for a README, a status page or an internal wiki: how many postcss (npm) vulnerabilities were published in the last 7 days and how many of them are critical, refreshed hourly.
[](https://junglewise.ai/threats/technologies/postcss)<a href="https://junglewise.ai/threats/technologies/postcss"><img src="https://junglewise.ai/threats/technologies/postcss/badge.svg" alt="postcss (npm) vulnerabilities" /></a>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, and this page as text at https://junglewise.ai/threats/technologies/postcss.md, 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, 13 November 2026.