{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-35210","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-04-01T18:48:58.937Z","datePublished":"2026-07-08T21:06:02.349Z","dateUpdated":"2026-07-09T13:45:43.275Z"},"containers":{"cna":{"title":"OpenCTI: Authorization Bypass via `synchronized-upsert` HTTP Header Injection","problemTypes":[{"descriptions":[{"cweId":"CWE-639","lang":"en","description":"CWE-639: Authorization Bypass Through User-Controlled Key","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-863","lang":"en","description":"CWE-863: Incorrect Authorization","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.1,"baseSeverity":"HIGH","confidentialityImpact":"LOW","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-36fr-4m54-94mj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-36fr-4m54-94mj"},{"name":"https://github.com/OpenCTI-Platform/opencti/pull/14243","tags":["x_refsource_MISC"],"url":"https://github.com/OpenCTI-Platform/opencti/pull/14243"},{"name":"https://github.com/OpenCTI-Platform/opencti/commit/134531ddf5ecf741006b7f0870b7c36711b96540","tags":["x_refsource_MISC"],"url":"https://github.com/OpenCTI-Platform/opencti/commit/134531ddf5ecf741006b7f0870b7c36711b96540"},{"name":"https://github.com/OpenCTI-Platform/opencti/releases/tag/7.260326.0","tags":["x_refsource_MISC"],"url":"https://github.com/OpenCTI-Platform/opencti/releases/tag/7.260326.0"}],"affected":[{"vendor":"OpenCTI-Platform","product":"opencti","versions":[{"version":"< 7.260326.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-08T21:06:02.349Z"},"descriptions":[{"lang":"en","value":"OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to 7.260326.0, an authorization bypass vulnerability in OpenCTI allows any authenticated user with KNOWLEDGE_KNUPDATE permission to bypass Confidence Level validation and Object Marking restrictions by injecting the synchronized-upsert: true HTTP header, enabling attackers to downgrade confidence levels, remove security markings such as TLP:RED, manipulate relationships, and affect STIX object types including Indicators, ThreatActors, Malware, and Reports. This issue is fixed in version 7.260326.0."}],"source":{"advisory":"GHSA-36fr-4m54-94mj","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-09T13:45:35.902145Z","id":"CVE-2026-35210","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-09T13:45:43.275Z"}}]}}