Is CVE-2026-105634 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-105634 being exploited in the wild.

How severe is CVE-2026-105634?

High severity, with a CVSS score of 8.1, published 5 October 2026.

Is there a fix for CVE-2026-105634?

Yes: fixed in 1.3.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-105634 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-105634?

Check whether you run Makeplane Plane at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-105634: Plane privilege escalation in project member role updates

CVE-2026-105634 · Severity: high · CVSS 8.1 · Published 2026-10-05

Plane is an open-source project management tool that controls who can access and modify projects. A guest user with minimal permissions could exploit a flaw in the role management system to demote administrators and other team members, stripping them of their project access and control. This allows a low-privileged attacker to sabotage team workflows and lock out project owners.

Technologies: Makeplane Plane. Vendors: Makeplane.

Quick answers

Is CVE-2026-105634 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-105634 being exploited in the wild.
How severe is CVE-2026-105634?: High severity, with a CVSS score of 8.1, published 5 October 2026.
Which products and versions are affected?: Makeplane Plane before 1.3.0.
Is there a fix for CVE-2026-105634?: Yes: fixed in 1.3.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-105634 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-105634?: Check whether you run Makeplane Plane at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 1.3.0

Technical details

The ProjectMemberViewSet.partial_update method lacks proper authorization checks when modifying project member roles. While it prevents escalation to higher roles, it fails to restrict guests from assigning lower or equal roles to other members, allowing privilege escalation via role demotion. The vulnerability requires authentication as a project member but affects any team member regardless of actual permission level.

Affected products

Makeplane Plane before 1.3.0

Timeline

2026-10-05: disclosed
2026-04-06: patched

References

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