CVE-2026-42084

{"id": "CVE-2026-42084", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 2.8}]}, "published": "2026-05-04T18:16:30.357", "references": [{"url": "https://github.com/OpenC3/cosmos/commit/2e623714e3426d5ae81b6f8239d4a2a6937ef776", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OpenC3/cosmos/releases/tag/v6.10.5", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OpenC3/cosmos/releases/tag/v7.0.0-rc3", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OpenC3/cosmos/security/advisories/GHSA-wgx6-g857-jjf7", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/OpenC3/cosmos/security/advisories/GHSA-wgx6-g857-jjf7", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-620"}]}], "descriptions": [{"lang": "en", "value": "OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. Prior to versions 6.10.5 and 7.0.0-rc3, the OpenC3 password change functionality allows a user to change their password without providing the old password, by accepting a valid session token instead. In assumed breach scenarios, this behaviour can be exploited by an attacker who has already obtained a valid session token, to gain persistence in hijacked account (including admin) and prevent legitimate users from accessing the account. This issue has been patched in versions 6.10.5 and 7.0.0-rc3."}], "lastModified": "2026-05-08T19:54:14.983", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:openc3:cosmos:*:*:*:*:open_source:*:*:*", "vulnerable": true, "matchCriteriaId": "930EEABE-50A2-4005-AE3C-2D14AF5A60BD", "versionEndExcluding": "6.10.5"}, {"criteria": "cpe:2.3:a:openc3:cosmos:7.0.0:rc1:*:*:open_source:*:*:*", "vulnerable": true, "matchCriteriaId": "38B72355-49A3-4D2F-BFDB-EE53C9E2C7AD"}, {"criteria": "cpe:2.3:a:openc3:cosmos:7.0.0:rc2:*:*:open_source:*:*:*", "vulnerable": true, "matchCriteriaId": "13E3A0EA-1085-4505-80BB-C0B133EC3498"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}