CVE-2025-57323: vulnerability facts

CVE-2025-57323

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 7.5 · High · EPSS 0.4%

Published: 2025-09-24T00:00:00.000Z
Updated: 2025-09-24T20:20:12.386Z

Stack: node

Affected products and versions

n/a
Versions
- n/a: Affected
No fix published
mpregular npm
Affected ranges
- SEMVER: ≤ 0.2.0
No fix published

Original sources

https://github.com/VulnSageAgent/PoCs/blob/main/JavaScript/prototype-pollution/mpregular%400.2.0/index.js
https://github.com/VulnSageAgent/PoCs/tree/main/JavaScript/prototype-pollution/CVE-2025-57323
https://nvd.nist.gov/vuln/detail/CVE-2025-57323

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CVE-2025-57323

Affected products and versions

n/a

mpregular npm

Original sources