{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42084", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-04-23T19:17:30.566Z", "datePublished": "2026-05-04T17:11:31.853Z", "dateUpdated": "2026-05-04T17:11:31.853Z"}, "containers": {"cna": {"title": "OpenC3 COSMOS: Hijacked session token can be used to reset password for persistence", "problemTypes": [{"descriptions": [{"cweId": "CWE-620", "lang": "en", "description": "CWE-620: Unverified Password Change", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}}], "references": [{"name": "https://github.com/OpenC3/cosmos/security/advisories/GHSA-wgx6-g857-jjf7", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/OpenC3/cosmos/security/advisories/GHSA-wgx6-g857-jjf7"}, {"name": "https://github.com/OpenC3/cosmos/commit/2e623714e3426d5ae81b6f8239d4a2a6937ef776", "tags": ["x_refsource_MISC"], "url": "https://github.com/OpenC3/cosmos/commit/2e623714e3426d5ae81b6f8239d4a2a6937ef776"}, {"name": "https://github.com/OpenC3/cosmos/releases/tag/v6.10.5", "tags": ["x_refsource_MISC"], "url": "https://github.com/OpenC3/cosmos/releases/tag/v6.10.5"}, {"name": "https://github.com/OpenC3/cosmos/releases/tag/v7.0.0-rc3", "tags": ["x_refsource_MISC"], "url": "https://github.com/OpenC3/cosmos/releases/tag/v7.0.0-rc3"}], "affected": [{"vendor": "OpenC3", "product": "cosmos", "versions": [{"version": "< 6.10.5", "status": "affected"}, {"version": ">= 7.0.0.pre.rc1, < 7.0.0-rc3", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-05-04T17:11:31.853Z"}, "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."}], "source": {"advisory": "GHSA-wgx6-g857-jjf7", "discovery": "UNKNOWN"}}}}

{}

{"cveTags": [], "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."}], "id": "CVE-2026-42084", "lastModified": "2026-05-04T18:16:30.357", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-04T18:16:30.357", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/OpenC3/cosmos/commit/2e623714e3426d5ae81b6f8239d4a2a6937ef776"}, {"source": "security-advisories@github.com", "url": "https://github.com/OpenC3/cosmos/releases/tag/v6.10.5"}, {"source": "security-advisories@github.com", "url": "https://github.com/OpenC3/cosmos/releases/tag/v7.0.0-rc3"}, {"source": "security-advisories@github.com", "url": "https://github.com/OpenC3/cosmos/security/advisories/GHSA-wgx6-g857-jjf7"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-620"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,6.10.5)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[7.0.0.pre.rc1,7.0.0-rc3)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "cosmos", "source": "cna", "vendor": "OpenC3"}, "product": "cosmos", "vendor": "openc3"}], "created": "2026-05-04T19:00:07.685726+00:00", "updated": "2026-05-04T19:43:53.623246+00:00", "vendors": ["openc3", "openc3$PRODUCT$cosmos"]}