CASL Ability, versions 2.4.0 through 6.7.4, contains a prototype pollution vulnerability.
Priority MEDIUM 50CWE-1321Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub.
Summary
CASL Ability, versions 2.4.0 through 6.7.4, contains a prototype pollution vulnerability.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00704 53rd percentileScored 2026-11-07
Fix Fixed @casl/ability (npm): 6.7.5
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| CASL Ability | CASL Ability | 2.4.0 – 6.7.4 | — | No fix listed | CNA |
| — | @casl/ability (npm) | 2.4.0 to before 6.7.5 | 6.7.5 | Patch available | GHSA-x9vf-53q3-cvx6 |
- CASL Ability VendorCASL Ability Affected 2.4.0 – 6.7.4 Fixed in — No fix listed CNA
- @casl/ability (npm) Vendor— Affected 2.4.0 to before 6.7.5 Fixed in 6.7.5 Patch available GHSA-x9vf-53q3-cvx6
Remediation
- Fix · GHSA-x9vf-53q3-cvx6 @casl/ability (npm) Fixed in 6.7.5 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-1774
- 2026-10-03 Alias added: GHSA-x9vf-53q3-cvx6
- 2026-10-08 EPSS moved to the 50th–90th percentile
References
Other 7
- https://github.com/stalniy/casl/tree/master/packages/casl-ability
- 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/pull/1093
- https://github.com/stalniy/casl/commit/39da920ec1dfadf3655e28bd0389e960ac6871f4
- https://github.com/stalniy/casl
- https://www.kb.cert.org/vuls/id/458422
Sources
- CVE-2026-1774 · CVE Program
- CVE-2026-1774 · NVD
- FIRST EPSS
- GHSA-x9vf-53q3-cvx6 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences