Advisory Database
  • Advisories
  • Dependency Scanning
  1. npm
  2. ›
  3. @casl/ability
  4. ›
  5. CVE-2026-1774

CVE-2026-1774: CASL Ability is Vulnerable to Prototype Pollution

February 10, 2026 (updated February 11, 2026)

CASL Ability, versions 2.4.0 through 6.7.4, contains a prototype pollution vulnerability.

References

  • cwe.mitre.org/data/definitions/1321.html
  • developer.mozilla.org/en-US/docs/Web/Security/Attacks/Prototype_pollution
  • github.com/advisories/GHSA-x9vf-53q3-cvx6
  • github.com/stalniy/casl
  • github.com/stalniy/casl/commit/39da920ec1dfadf3655e28bd0389e960ac6871f4
  • github.com/stalniy/casl/pull/1093
  • github.com/stalniy/casl/tree/master/packages/casl-ability
  • nvd.nist.gov/vuln/detail/CVE-2026-1774
  • www.kb.cert.org/vuls/id/458422

Code Behaviors & Features

Detect and mitigate CVE-2026-1774 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions starting from 2.4.0 before 6.7.5

Fixed versions

  • 6.7.5

Solution

Upgrade to version 6.7.5 or above.

Impact 9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Learn more about CVSS

Weakness

  • CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

Source file

npm/@casl/ability/CVE-2026-1774.yml

Spotted a mistake? Edit the file on GitLab.

  • Site Repo
  • About GitLab
  • Terms
  • Privacy Statement
  • Contact

Page generated Thu, 12 Feb 2026 12:18:12 +0000.