CVE-2026-1774 json
CASL Ability, versions 2.4.0 through 6.7.4, contains a prototype pollution vulnerability.
published 2026-02-10 8 mo ago modified 2026-06-17 4 mo ago also GHSA-x9vf-53q3-cvx6 , EUVD-2026-7071
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
CASL Ability, versions 2.4.0 through 6.7.4, contains a prototype pollution vulnerability.
Patch / fix
- npm @casl/ability 6.7.5
- github.com/stalniy/casl@39da920 commit
- github.com/stalniy/casl#1093 pull request
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- total
- Assessed
- 8 mo ago
Exploit prediction
0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | @casl/ability | >=2.4.0, <6.7.5 |
6.7.5 |
Affected products
- CASL Ability CASL Ability
Classification
- Weakness
-
- CWE-1321 Improperly Controlled Modification of Object Prototype Attributes
References
-
github.com
/stalniy/casl/pull/1093
web
-
github.com
/stalniy/casl/commit/39da920ec1dfadf3655e28bd0389e960ac6871f4
web
-
github.com
/stalniy/casl/tree/master/packages/casl-ability
web
-
cwe.mitre.org
/data/definitions/1321.html
web
-
developer.mozilla.org
/en-US/docs/Web/Security/Attacks/Prototype_pollution
web
-
kb.cert.org
/vuls/id/458422
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-1774
advisory
-
github.com
/stalniy/casl
package
Sources
- CVE List CVE-2026-1774
- GitHub Advisory GHSA-x9vf-53q3-cvx6
- NVD CVE-2026-1774
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