Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openjsf | Eslint | < 9.26.0 |
Related Weaknesses (CWE)
References
- https://gist.github.com/lyyffee/2ee1815e5c2da82c05e9838b9bfefbbcThird Party Advisory
- https://github.com/eslint/eslint/issues/19646ExploitIssue TrackingThird Party Advisory
FAQ
What is CVE-2025-50537?
CVE-2025-50537 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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, ...
How severe is CVE-2025-50537?
CVE-2025-50537 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-50537?
Check the references section above for vendor advisories and patch information. Affected products include: Openjsf Eslint.