high7.5Known exploited
CVE-2025-54313
eslint-config-prettier, eslint-plugin-prettier, synckit, @pkgr/core, napi-postinstall have embedded malicious code
Exploited in the wild
This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-01-22. Federal due date: 2026-02-12.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Impact
Prettier eslint-config-prettier contains an embedded malicious code vulnerability. Installing an affected package executes an install.js file that launches the node-gyp.dll malware on Windows.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | eslint-config-prettier | = 8.10.1 | 8.10.2 |
| npm | eslint-plugin-prettier | >= 4.2.2, <= 4.2.3 | 4.2.4 |
| npm | synckit | = 0.11.9 | 0.11.10 |
| npm | @pkgr/core | = 0.2.8 | 0.2.9 |
| npm | napi-postinstall | = 0.3.1 | 0.3.2 |
| npm | got-fetch | >= 5.1.11, <= 5.1.12 | 6.0.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Prettier | Eslint-Config-Prettier | Versions 8.10.1, 9.1.1, 10.1.6, 10.1.7 |
| Prettier | Eslint-Plugin-Prettier | Versions 4.2.2, 4.2.3 |
| Un-Ts | Synckit | Version 0.11.9 |
| Un-Ts | Pkgr\/Core | Version 0.2.8 |
| Alexghr | Got-Fetch | Versions 5.1.1, 5.1.2 |
| Un-Ts | Napi-Postinstall | Version 0.3.1 |
| Homarr | Homarr | from 1.29.0 before 1.30.0 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- CISA KEV catalog
- https://github.com/prettier/eslint-config-prettier/issues/339
- https://news.ycombinator.com/item?id=44608811
- https://news.ycombinator.com/item?id=44609732
- https://socket.dev/blog/npm-phishing-campaign-leads-to-prettier-tooling-packages-compromise
- https://www.bleepingcomputer.com/news/security/popular-npm-linter-packages-hijacked-via-phishing-to-drop-malware/
- https://www.npmjs.com/package/eslint-config-prettier?activeTab=versions
- https://www.stepsecurity.io/blog/supply-chain-security-alert-eslint-config-prettier-package-shows-signs-of-compromise
- https://github.com/community-scripts/ProxmoxVE/discussions/6115
- https://www.endorlabs.com/learn/cve-2025-54313-eslint-config-prettier-compromise----high-severity-but-windows-only
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-54313
- https://github.com/advisories/GHSA-f29h-pxvx-f335
- https://nvd.nist.gov/vuln/detail/CVE-2025-54313
- https://www.bleepingcomputer.com/news/security/popular-npm-linter-packages-hijacked-via-phishing-to-drop-malware
- https://github.com/prettier/eslint-config-prettier/commit/9b0b0a47ec28a7a83cf65e8436a8776910379385
- https://github.com/prettier/eslint-plugin-prettier/commit/ec39dd4400f10c52d10cd991c10fa8de51ceb854
- https://github.com/un-ts/napi-postinstall/commit/38b4e95cf554e2549b9e1e2c4ff6bff4da9a65f9
- https://github.com/un-ts/pkgr/commit/e1420c99e44d8a2ae949381f9fbe1af5ba9cb1dd
- https://github.com/un-ts/synckit/commit/8f2ee32d4f75736a1c8d7e1101190a71e48909e4
- https://secure.software/npm/packages/got-fetch
- https://checkmarx.com/zero-post/supply-chain-phishing-campaign-drops-more-malware-into-npm-got-fetch-5-1