{"schema":"threatline.record/2","record":{"id":"CVE-2026-105634","aliases":["GHSA-494h-3rcq-5g3c"],"summary":"Plane: Privilege Escalation: Project Guest Can Demote Admin/Member Roles","details":"Plane is an open-source project management tool. Prior to 1.3.0, the ProjectMemberViewSet.partial_update method allows any project member, including a user with the lowest GUEST role, to modify another project member's role. The authorization check prevents assigning a role higher than the requester's role but does not prevent assigning a lower or equal role, allowing a Guest to demote Administrators and Members and deny them project control. This vulnerability is fixed in 1.3.0.","categories":["Unclassified"],"product":"plane","vendor":"makeplane","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-105634","source_modified_at":"2026-10-06T14:52:51.459Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"plane","vendor":"makeplane","versions":[{"version":"< 1.3.0","status":"affected"}],"defaultStatus":null}],"fixed_versions":[],"cvss":8.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00293,"percentile":0.20784,"score_date":"2026-10-23"},"published_at":"2026-10-05T18:00:50.831Z","modified_at":"2026-10-06T14:52:51.459Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-105634","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-06T14:52:51.459Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-105634","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/makeplane/plane/security/advisories/GHSA-494h-3rcq-5g3c","tags":["x_refsource_CONFIRM"]},{"source":"CVE List","url":"https://github.com/makeplane/plane/pull/8833","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/makeplane/plane/commit/587fe76032fb69275866fdeb655699a70a83c521","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/makeplane/plane/releases/tag/v1.3.0","tags":["x_refsource_MISC"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-06T14:34:17.859962Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-06T14:52:51.459Z","content_hash":"01b65290dace66f8566333c414dead085a0bf7e3090735a4219cf0e9e0b579c7"}}