Vulnerability Description
A vulnerability exists in the 'counterpart' library for Node.js and the browser due to insufficient sanitization of user-controlled input in translation key processing. The affected versions prior to 0.18.6 allow attackers to manipulate the library's translation functionality by supplying maliciously crafted keys containing prototype chain elements (e.g., __proto__ ), leading to prototype pollution. This weakness enables adversaries to inject arbitrary properties into the JavaScript Object prototype through the first parameter of the translate method when combined with specific separator configurations, potentially resulting in denial-of-service conditions or remote code execution in vulnerable applications. The issue arises from the library's failure to properly validate or neutralize special characters in translation key inputs before processing.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/C
- https://github.com/martinandert/counterpart/issues/54
FAQ
What is CVE-2025-57354?
CVE-2025-57354 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A vulnerability exists in the 'counterpart' library for Node.js and the browser due to insufficient sanitization of user-controlled input in translation key processing. The affected versions prior to ...
How severe is CVE-2025-57354?
CVE-2025-57354 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-2025-57354?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.