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Vulnerabilities

Vulnerability · CVE-2026-111172

@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.

Published Oct 15, 2026 · catalog updated Oct 15, 2026 · @casl/ability 6.7.5 before 7.0.2

Check if you run it

No confirmed exploitation is on record for CVE-2026-111172. EPSS is 0.38%. Act only if a listed version of @casl/ability 6.7.5 before 7.0.2 is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (@casl/ability 6.7.5 before 7.0.2).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.38%
Remediation
Not established
Affected products
See sources for product scope

@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.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-111172

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-111172. EPSS is 0.38%. Act only if a listed version of @casl/ability 6.7.5 before 7.0.2 is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). EPSS 0.38%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 15, 2026 · NIST NVD

    Detected

    @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.

Sources

  • CVE.orgVulnerability recordCVE-2026-111172

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-111172

    30-day exploitation probability 0.4%

    first.org
  • NIST NVDVulnerability recordCVE-2026-111172

    @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 functi

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.