CVE-2026-105634

Plane is an open-source project management tool. Prior to 1.3.0, the ProjectMemberViewSet.partial_update method allows any project member, including a user with the lowest GUEST role, to modify another project member's role. The authorization check prevents assigning a role higher than the requester's role but does not prevent assigning a lower or equal role, allowing a Guest to demote Administrators and Members and deny them project control. This vulnerability is fixed in 1.3.0.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/makeplane/plane/commit/587fe76032fb69275866fdeb655699a70a83c521
https://github.com/makeplane/plane/pull/8833
https://github.com/makeplane/plane/releases/tag/v1.3.0
https://github.com/makeplane/plane/security/advisories/GHSA-494h-3rcq-5g3c

Configurations

No configuration.

History

05 Oct 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-05 19:17

Updated : 2026-10-06 15:17

NVD link : CVE-2026-105634

Mitre link : CVE-2026-105634

CVE.ORG link : CVE-2026-105634

JSON object : View

Products Affected

No product.

CWE

CWE-269

Improper Privilege Management

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