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.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-2cjr-5v3h-v2w4 Evolver has Prototype Pollution via `Object.assign()` in its mailbox store operations
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 06 May 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 06 May 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 06 May 2026 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Evomap
Evomap evolver
Vendors & Products Evomap
Evomap evolver

Mon, 04 May 2026 17:15:00 +0000

Type Values Removed Values Added
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.
Title Evolver: Prototype Pollution via `Object.assign()` in mailbox store operations
Weaknesses CWE-1321
References
Metrics cvssV3_1

{'score': 5.2, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-06T13:40:54.808Z

Reserved: 2026-04-23T19:17:30.565Z

Link: CVE-2026-42077

cve-icon Vulnrichment

Updated: 2026-05-06T13:38:42.448Z

cve-icon NVD

Status : Received

Published: 2026-05-04T17:16:24.587

Modified: 2026-05-06T15:16:11.000

Link: CVE-2026-42077

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-06T09:22:45Z

Weaknesses