Vulnerability · Published Oct 5, 2026 · Assigned by GitHub_M
CVE-2026-104894Plane: Cross-Tenant Module Issue Linking via IDOR
Medium 4.3
In plain English
A medium-severity authorization bypass via user-controlled key in plane from makeplane. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.2%top 85.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Plane is an open-source project management tool. Prior to 1.4.0, the modules endpoint accepts issue UUIDs in the URL path without validating that they belong to the caller's workspace. An authenticated user can link issues from any workspace to modules in their own workspace. This issue is fixed in 1.4.0.
Affected products (as reported)
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
References
- https://github.com/makeplane/plane/security/advisories/GHSA-x5c5-hmvm-94v9 x_refsource_CONFIRM
- https://github.com/makeplane/plane/pull/9269 x_refsource_MISC
- https://github.com/makeplane/plane/commit/81d9873d7f1cf1d1252ed53c12dd33696be73a89 x_refsource_MISC
- https://github.com/makeplane/plane/releases/tag/v1.4.0 x_refsource_MISC