CVE-2026-42077

Description

Evolver is a GEP-powered self-evolving engine for AI agents. Prior to version 1.69.3, a prototype pollution vulnerability in the mailbox store module allows attackers to modify the behavior of all JavaScript objects by injecting malicious properties into Object.prototype. The vulnerability exists in the _applyUpdate() and _updateRecord() functions which use Object.assign() to merge user-controlled data without filtering dangerous keys like __proto__, constructor, or prototype. This issue has been patched in version 1.69.3.

CVSS Vector

References

• https://github.com/EvoMap/evolver/releases/tag/v1.69.3
• https://github.com/EvoMap/evolver/security/advisories/GHSA-2cjr-5v3h-v2w4