{"id":"CVE-2026-105634","title":"Plane is an open-source project management tool","summary":"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 authoriz…","severity":"high","cvss":8.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","cwe":["CWE-269"],"vendor":"makeplane","product":"plane","affected":["plane < 1.3.0"],"published":"2026-10-05","updated":"2026-10-06","sourceUpdated":"2026-10-06T15:17:13.693","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-105634","references":[{"url":"https://github.com/makeplane/plane/commit/587fe76032fb69275866fdeb655699a70a83c521","label":"security-advisories@github.com"},{"url":"https://github.com/makeplane/plane/pull/8833","label":"security-advisories@github.com"},{"url":"https://github.com/makeplane/plane/releases/tag/v1.3.0","label":"security-advisories@github.com"},{"url":"https://github.com/makeplane/plane/security/advisories/GHSA-494h-3rcq-5g3c","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-06T14:34:17.859962Z"},"ingestedAt":"2026-10-05T18:29:11.217Z","epss":0.00293,"epssPercentile":0.2177,"slug":"CVE-2026-105634","body":"## Overview\n\nPlane 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}