{"id":"CVE-2026-111172","title":"@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","summary":"@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 'to…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-1321"],"vendor":"stalniy","product":"@casl/ability","affected":["@casl/ability >= 6.7.5 < 7.0.2"],"published":"2026-10-15","updated":"2026-10-15","sourceUpdated":"2026-10-15T19:17:33.450","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-111172","references":[{"url":"https://github.com/stalniy/casl","label":"disclosure@vulncheck.com"},{"url":"https://github.com/stalniy/casl/blob/80f2380d03cfe9b162685d510ba8bc0ce83d0598/packages/casl-ability/src/utils.ts#L11-L29","label":"disclosure@vulncheck.com"},{"url":"https://github.com/stalniy/casl/commit/58242cb3c7911c8a89bacfb7d732701d81bc1324","label":"disclosure@vulncheck.com"},{"url":"https://github.com/stalniy/casl/pull/1305","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/casl-ability-6.7.5-before-7.0.2-prototype-pollution-via-rulestofields-setbypath","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-15T19:25:46.425Z","slug":"CVE-2026-111172","body":"## Overview\n\n@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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}