{"id":"CVE-2026-105637","title":"Plane: Cross-Project Asset Hijacking via 'ProjectBulkAssetEndpoint' (sibling of CVE-2026-46558)","summary":"Plane is an open-source project management tool. Prior to 1.4.0, ProjectBulkAssetEndpoint.post in apps/api/plane/app/views/asset/v2.py retrieves assets using id__in=asset_ids and workspace__slug=slug but does not constrain the query with…","severity":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-639"],"vendor":"makeplane","product":"plane","affected":["plane < 1.4.0"],"published":"2026-10-05","updated":"2026-10-05","sourceUpdated":"2026-10-05T18:04:02.780Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-105637","references":[{"url":"https://github.com/makeplane/plane/security/advisories/GHSA-r2hw-fff3-pjwp","label":"https://github.com/makeplane/plane/security/advisories/GHSA-r2hw-fff3-pjwp"},{"url":"https://github.com/makeplane/plane/pull/9495","label":"https://github.com/makeplane/plane/pull/9495"},{"url":"https://github.com/makeplane/plane/commit/15e835710c7f938e0fae9c0ee77bb8162ff436a0","label":"https://github.com/makeplane/plane/commit/15e835710c7f938e0fae9c0ee77bb8162ff436a0"},{"url":"https://github.com/makeplane/plane/releases/tag/v1.4.0","label":"https://github.com/makeplane/plane/releases/tag/v1.4.0"}],"tags":["cve.org"],"ingestedAt":"2026-10-05T18:29:11.216Z","slug":"CVE-2026-105637","body":"## Overview\n\nPlane is an open-source project management tool. Prior to 1.4.0, ProjectBulkAssetEndpoint.post in apps/api/plane/app/views/asset/v2.py retrieves assets using id__in=asset_ids and workspace__slug=slug but does not constrain the query with project_id from the URL. A workspace Guest can provide asset UUIDs from another project in the same workspace and reassign their issue_id, comment_id, page_id, draft_issue_id, or project_id to an entity the attacker controls. Plane then treats the attacker's project as the new owner and provides a presigned download URL for the hijacked file. This issue is fixed in 1.4.0.\n\n## Affected\n\n- `plane < 1.4.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":52.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}