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: < 1% Very Low
KEV: No
AI Analysis

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Remediation

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Tracking

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History

Tue, 27 Oct 2026 05:30:00 +0100

Type Values Removed Values Added
First Time appeared Stalniy
Stalniy casl
Vendors & Products Stalniy
Stalniy casl

Fri, 16 Oct 2026 20:30:00 +0200

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 15 Oct 2026 21:00:00 +0200

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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-16T17:09:34.612Z

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

Link: CVE-2026-111172

cve-icon Vulnrichment

Updated: 2026-10-16T16:31:32.128Z

cve-icon NVD

Status : Deferred

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

Modified: 2026-10-16T18:25:45.343

Link: CVE-2026-111172

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-26T23:36:41Z

Weaknesses
  • CWE-1321

    Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')