CVE-2026-35210

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 KNOWLEDGEKNUPDATE permission to bypass Confidence Level validation and Object Marking...

CVE-2026-35210

Summary: OpenCTI prior to version 7.260326.0 contains an authorization bypass via the synchronized-upsert: true HTTP header, exploitable by any authenticated user with KNOWLEDGE_KNUPDATE permission. This allows bypassing Confidence Level validation and Object Marking restrictions, enabling attack...

CVE-2026-35210 OpenCTI: Authorization Bypass via `synchronized-upsert` HTTP Header Injection

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 KNOWLEDGEKNUPDATE permission to bypass Confidence Level validation and Object Marking...

PT-2026-56601

Name of the Vulnerable Software and Affected Versions OpenCTI versions prior to 7.260326.0 Description An authorization bypass allows authenticated users with KNOWLEDGE KNUPDATE permission to circumvent Confidence Level validation and Object Marking restrictions. This is achieved by injecting the...