Vulnerability Description
A prototype pollution vulnerability exists in the ts-fns package versions prior to 13.0.7, where insufficient validation of user-provided keys in the assign function allows attackers to manipulate the Object.prototype chain. By leveraging this flaw, adversaries may inject arbitrary properties into the global object's prototype, potentially leading to application crashes, unexpected code execution behaviors, or bypasses of security-critical validation logic dependent on prototype integrity. The vulnerability stems from improper handling of deep property assignment operations within the library's public API functions. This issue remains unaddressed in the latest available version.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/C
- https://github.com/tangshuang/ts-fns/issues/36
FAQ
What is CVE-2025-57351?
CVE-2025-57351 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A prototype pollution vulnerability exists in the ts-fns package versions prior to 13.0.7, where insufficient validation of user-provided keys in the assign function allows attackers to manipulate the...
How severe is CVE-2025-57351?
CVE-2025-57351 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-57351?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.