mpregular vulnerable to prototype pollution

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.

Recommendation

No fix is available yet. Followings are affected versions:

• <= 0.2.0

References

• GHSA-xx4g-r65p-3qf2
• CVE-2025-57323
• CWE-1321
• CAPEC-310
• OWASP 2021-A6

Related Issues

• parse is vulnerable to prototype pollution - CVE-2025-57324
• Elysia vulnerable to prototype pollution with multiple standalone schema validation - CVE-2025-66456
• counterpart vulnerable to prototype pollution - CVE-2025-57354
• @pdfme/common vulnerable to to XSS and Prototype Pollution through its expression evaluation - CVE-2025-53626

Tags:

npm

mpregular