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CVE-2026-42077

CVE-2026-42077 · Evolver: Prototype Pollution via `Object.assign()` in mailbox store operations

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

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 5.2 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • evolver

    Versions
    • < 1.69.3: Affected

    No fix published

  • @evomap/evolver npm

    Affected ranges
    • SEMVER: < 1.69.3

    Update to 1.69.3

Original sources

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