HOMEVULNERABILITIESCVE-2026-42077
MEDIUM

CVE-2026-42077

CWE-1321Published: May 4, 2026· Updated: May 7, 2026

5.2
CVSS v3.1
EPSS:0.01%probability of exploitation in 30 daysPercentile:2.7th

Official 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.

NVD Source

Technical Analysis

CVE-2026-42077 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.2.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityHigh
Privileges Req.High
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityHigh
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:H

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

All References (3)

→
https://github.com/EvoMap/evolver/releases/tag/v1.69.3
→
https://github.com/EvoMap/evolver/security/advisories/GHSA-2cjr-5v3h-v2w4
→
https://github.com/EvoMap/evolver/security/advisories/GHSA-2cjr-5v3h-v2w4

Quick Facts

CVE IDCVE-2026-42077
CVSS Score5.2 / 10
SeverityMEDIUM
WeaknessCWE-1321
CISA KEVNo
EPSS (30d)0.01%
PublishedMay 4, 2026

Related CVEs (CWE-1321)

CVE-2026-32621
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CVE-2026-44789
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CVE-2026-44791
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CVE-2026-49252
9.9
CVE-2026-27837
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CVE-2026-33228
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Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-42077 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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