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

{
    "lastseen": "",
    "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.",
    "published": "2026-05-04T16:50:15.167Z",
    "modified": "2026-05-04T16:50:15.167Z",
    "type": "cve",
    "title": "Evolver: Prototype Pollution via `Object.assign()` in mailbox store operations",
    "source": "GitHub_M",
    "references": "https://github.com/EvoMap/evolver/security/advisories/GHSA-2cjr-5v3h-v2w4\nhttps://github.com/EvoMap/evolver/releases/tag/v1.69.3",
    "id": "CVE-2026-42077",
    "bulletinFamily": "",
    "cwe": [
        "CWE-1321"
    ],
    "cvelist": null,
    "sourceData": "EvoMap evolver < 1.69.3",
    "sourceHref": "",
    "cvss": {
        "score": 5.2,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:H",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "evolver",
    "version": "< 1.69.3",
    "vendor": "EvoMap",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}