CVE-2025-50537 (Medium) detected in eslint-8.57.0.tgz, eslint-8.57.1.tgz

[mend-bolt-for-github]

CVE-2025-50537 - Medium Severity Vulnerability

Vulnerable Libraries - eslint-8.57.0.tgz, eslint-8.57.1.tgz

eslint-8.57.0.tgz

Library home page: https://registry.npmjs.org/eslint/-/eslint-8.57.0.tgz

Path to dependency file: /ui/package.json

Path to vulnerable library: /ui/package.json

Dependency Hierarchy:

• @postgres.ai/ce-4.0.3.tgz (Root Library)
  • eslint-plugin-cypress-2.14.0.tgz
    • ❌ eslint-8.57.0.tgz (Vulnerable Library)

eslint-8.57.1.tgz

An AST-based pattern checker for JavaScript.

Library home page: https://registry.npmjs.org/eslint/-/eslint-8.57.1.tgz

Path to dependency file: /ui/package.json

Path to vulnerable library: /ui/package.json

Dependency Hierarchy:

• @postgres.ai/ce-4.0.3.tgz (Root Library)
  • react-scripts-5.0.1.tgz
    • ❌ eslint-8.57.1.tgz (Vulnerable Library)

Found in base branch: master

Vulnerability Details

Stack overflow vulnerability in eslint before 9.26.0 when serializing objects with circular references in eslint/lib/shared/serialization.js. The exploit is triggered via the RuleTester.run() method, which validates test cases and checks for duplicates. During validation, the internal function checkDuplicateTestCase() is called, which in turn uses the isSerializable() function for serialization checks. When a circular reference object is passed in, isSerializable() enters infinite recursion, ultimately causing a stack overflow.

Publish Date: 2026-01-26

URL: CVE-2025-50537

CVSS 3 Score Details (5.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2026-01-26

Fix Resolution: eslint - 9.26.0,https://github.com/eslint/eslint.git - v9.26.0

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