CVE-2026-42077 — Evolver: Prototype Pollution via `Object.assign()` in mailbox store operations
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 …
Published: 2026-05-04 · CVSS: 5.2 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7