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

CVSS 5.2 · Medium EPSS 0.02% · P5
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I. Basic Information for CVE-2026-42077

Vulnerability Information
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Vulnerability Title
Evolver: Prototype Pollution via `Object.assign()` in mailbox store operations
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1321
Source: NVD (National Vulnerability Database)
Vulnerability Title
Evolver 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Evolver是EvoMap开源的一款智能体自我进化工具。 Evolver 1.69.3之前版本存在安全漏洞，该漏洞源于邮箱存储模块中原型污染问题，可能导致攻击者通过注入恶意属性修改所有JavaScript对象行为。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
EvoMapevolver < 1.69.3 -

II. Public POCs for CVE-2026-42077

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III. Intelligence Information for CVE-2026-42077

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Same Patch Batch · EvoMap · 2026-05-04 · 3 CVEs total

CVE-2026-420769.8 CRITICALEvolver: Command Injection via `execSync` in `_extractLLM()` function allows Remote Code E
CVE-2026-420758.1 HIGHEvolver: Path Traversal via `--out` flag in `fetch` command allows Arbitrary File Write

IV. Related Vulnerabilities

Same product: evolver
Same vendor: EvoMap
Same weakness: CWE-1321

V. Comments for CVE-2026-42077

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