{"id":"CVE-2026-104969","title":"Plane is an open-source project management tool","summary":"Plane is an open-source project management tool. Prior to 1.4.0, the cycle-issues endpoint accepts issue UUIDs in the request body without validating that they belong to the caller's workspace. An authenticated user can add issues from a…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","cwe":["CWE-639"],"vendor":"makeplane","product":"plane","affected":["plane < 1.4.0"],"published":"2026-10-05","updated":"2026-10-05","sourceUpdated":"2026-10-05T18:17:32.003","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-104969","references":[{"url":"https://github.com/makeplane/plane/commit/81d9873d7f1cf1d1252ed53c12dd33696be73a89","label":"security-advisories@github.com"},{"url":"https://github.com/makeplane/plane/pull/9269","label":"security-advisories@github.com"},{"url":"https://github.com/makeplane/plane/releases/tag/v1.4.0","label":"security-advisories@github.com"},{"url":"https://github.com/makeplane/plane/security/advisories/GHSA-22g9-9xfv-q3fr","label":"security-advisories@github.com"},{"url":"https://github.com/makeplane/plane/security/advisories/GHSA-22g9-9xfv-q3fr","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-05T17:47:06.863715Z"},"ingestedAt":"2026-10-05T17:27:45.053Z","slug":"CVE-2026-104969","body":"## Overview\n\nPlane is an open-source project management tool. Prior to 1.4.0, the cycle-issues endpoint accepts issue UUIDs in the request body without validating that they belong to the caller's workspace. An authenticated user can add issues from any workspace to a cycle they control. If a victim issue is already assigned to a cycle, the operation removes it from the victim's cycle, causing a destructive cross-tenant write. This issue is fixed in 1.4.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":12,"ransomware":0},"changes":[{"seq":215964,"id":"CVE-2026-104969","ts":1791225029127,"field":"exploit_available","old":"false","new":"true"}]}