{"id":"CVE-2026-42077","sourceIdentifier":"security-advisories@github.com","published":"2026-05-04T17:16:24.587","lastModified":"2026-06-17T10:47:23.820","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"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."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"EvoMap","product":"evolver","versions":[{"version":"< 1.69.3","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:H","baseScore":5.2,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"HIGH"},"exploitabilityScore":0.5,"impactScore":4.7}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-06T13:40:45.787015Z","id":"CVE-2026-42077","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-1321"}]}],"references":[{"url":"https://github.com/EvoMap/evolver/releases/tag/v1.69.3","source":"security-advisories@github.com"},{"url":"https://github.com/EvoMap/evolver/security/advisories/GHSA-2cjr-5v3h-v2w4","source":"security-advisories@github.com"},{"url":"https://github.com/EvoMap/evolver/security/advisories/GHSA-2cjr-5v3h-v2w4","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}