Medium severity · published Oct 5, 2026
CVE-2026-104894
Plane: Cross-Tenant Module Issue Linking via IDOR
4.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PL
plane · makeplane
< 1.4.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-104894
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-104894
x_refsource_CONFIRM
https://github.com/makeplane/plane/security/advisories/GHSA-x5c5-hmvm-94v9
x_refsource_MISC
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
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