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.
Published: 2026-10-15
Score: 6 Medium
EPSS: n/a
KEV: No
AI Analysis

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Remediation

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Advisories

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History

Thu, 15 Oct 2026 19:00:00 +0000

Type Values Removed Values Added
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.
Title @casl/ability 6.7.5 before 7.0.2 Prototype Pollution via rulesToFields setByPath
Weaknesses CWE-1321
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-15T18:57:56.567Z

Reserved: 2026-10-15T17:04:07.664Z

Link: CVE-2026-111172

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-15T19:17:33.450

Modified: 2026-10-15T19:17:33.450

Link: CVE-2026-111172

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses