Open-Source Project Management Tool Vulnerability in Plane by MakePlane
CVE-2026-104965

5.4MEDIUM

Key Information:

Vendor

Makeplane

Status
Plane
Vendor
CVE Published:
5 October 2026

What is CVE-2026-104965?

The Plane project management tool contains a vulnerability that allows authenticated users to create relationships between their own issues and those in other workspaces without proper validation. This can expose sensitive issue metadata and activity events to unauthorized users. The vulnerability was addressed in version 1.4.0, where validation checks for issue UUIDs were implemented to restrict access based on the caller's workspace.

Affected Version(s)

plane < 1.4.0

References

https://github.com/makeplane/plane/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/makeplane/plane/pull/9269
x_refsource_MISC
https://github.com/makeplane/plane/commit/81d9873d7f1cf1d...
x_refsource_MISC

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.