CVE-2026-111172
Description
@casl/ability 6.7.5 before 7.0.2 contains a prototype pollution vulnerability in rulesToFields() that allows attackers to modify inherited builtins via dotted condition keys. Attackers controlling rule conditions can supply keys like 'toString.call' to alter shared builtin functions process-wide, causing denial of service for the Node.js process.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://github.com/stalniy/casl
- https://github.com/stalniy/casl/blob/80f2380d03cfe9b162685d510ba8bc0ce83d0598/packages/casl-ability/src/utils.ts#L11-L29
- https://github.com/stalniy/casl/commit/58242cb3c7911c8a89bacfb7d732701d81bc1324
- https://github.com/stalniy/casl/pull/1305
- https://www.vulncheck.com/advisories/casl-ability-6.7.5-before-7.0.2-prototype-pollution-via-rulestofields-setbypath
CWEs
CWE-1321
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.