Vulnerability Description
mpregular is a package that provides a small program development framework based on RegularJS. A Prototype Pollution vulnerability in the mp.addEventHandler function of mpregular version 0.2.0 and before allows attackers to inject properties on Object.prototype via supplying a crafted payload, causing denial of service (DoS) as the minimum consequence.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Regularjs | Mpregular | <= 0.2.0 |
Related Weaknesses (CWE)
References
- https://github.com/VulnSageAgent/PoCs/blob/main/JavaScript/prototype-pollution/mBroken Link
- https://github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CThird Party Advisory
FAQ
What is CVE-2025-57323?
CVE-2025-57323 is a vulnerability with a CVSS score of 7.5 (HIGH). mpregular is a package that provides a small program development framework based on RegularJS. A Prototype Pollution vulnerability in the mp.addEventHandler function of mpregular version 0.2.0 and bef...
How severe is CVE-2025-57323?
CVE-2025-57323 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-57323?
Check the references section above for vendor advisories and patch information. Affected products include: Regularjs Mpregular.