{"id":"CVE-2026-105634","aliases":["EUVD-2026-92699","GHSA-494h-3rcq-5g3c"],"status":"published","title":"Plane: Privilege Escalation: Project Guest Can Demote Admin/Member Roles","description":"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.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00293,"percentile":0.22164,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2026-10-05T18:00:50Z","modified":"2026-11-11T02:48:43Z","products":[{"vendor":"makeplane","product":"plane"}],"references":[{"url":"https://github.com/makeplane/plane/security/advisories/GHSA-494h-3rcq-5g3c","tags":["x_refsource_CONFIRM","advisory"]},{"url":"https://github.com/makeplane/plane/pull/8833","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/makeplane/plane/commit/587fe76032fb69275866fdeb655699a70a83c521","tags":["x_refsource_MISC","fix"]},{"url":"https://github.com/makeplane/plane/releases/tag/v1.3.0","tags":["x_refsource_MISC","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105634.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105634","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-105634","title":"Plane: Privilege Escalation: Project Guest Can Demote Admin/Member Roles","description":"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.","status":"published","published":"2026-10-05T18:00:50.831Z","modified":"2026-10-06T14:52:51.459Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:19:57.100857Z"}],"euvd":[{"id":"EUVD-2026-92699","description":"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.","status":"published","published":"2026-10-05T18:00:50Z","modified":"2026-10-06T14:52:51Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T17:27:37.480805Z"}],"nvd":[{"id":"CVE-2026-105634","description":"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.","status":"published","published":"2026-10-05T19:17:17.33Z","modified":"2026-10-06T15:17:13.693Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:12:54.129949Z"}],"osv":[{"id":"CVE-2026-105634","title":"Plane: Privilege Escalation: Project Guest Can Demote Admin/Member Roles","description":"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.","status":"published","published":"2026-10-05T18:00:50.831Z","modified":"2026-11-11T10:47:23.846923246Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high"}],"cwes":["CWE-269"],"updated_at":"2026-11-11T03:22:00.901153Z"}]}}