Open-source package vulnerability · npm
CVE-2026-1774: CASL Ability is Vulnerable to Prototype Pollution
criticalCVSS 3.1 9.8GHSA-x9vf-53q3-cvx6
CASL Ability, versions 2.4.0 through 6.7.4, contains a prototype pollution vulnerability.
Published Feb 10, 2026 · Updated Feb 11, 2026
Affected packages
@casl/ability
- Ecosystem
- npm
- Affected
- >= 2.4.0, <= 6.7.4
- Fixed in
- 6.7.5
- Check
npm ls @casl/ability
Advisory details
From the GitHub Advisory Database (CC BY 4.0).
CASL Ability, versions 2.4.0 through 6.7.4, contains a prototype pollution vulnerability.
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-1774
- https://cwe.mitre.org/data/definitions/1321.html
- https://developer.mozilla.org/en-US/docs/Web/Security/Attacks/Prototype_pollution
- https://github.com/stalniy/casl/tree/master/packages/casl-ability
- https://www.kb.cert.org/vuls/id/458422
- https://github.com/stalniy/casl/pull/1093
- https://github.com/stalniy/casl/commit/39da920ec1dfadf3655e28bd0389e960ac6871f4
- https://github.com/advisories/GHSA-x9vf-53q3-cvx6
How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology