CVE-2026-105634 Plane - Broken Access Control

Plane < 1.3.0 contains a broken access control vulnerability caused by insufficient authorization checks in ProjectMemberViewSet.partial_update, letting project members with GUEST role demote other members, exploit requires being a project member.

CVSS base score 8.1 /10

High

CISA KEV: Not listed
Public exploit: None known
Authentication: Required
EPSS: 0.29% chance of exploitation in 30 days

View the NVD record ↗

Details

Type: Broken Access Control
Impact: Broken Access Control
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Published: 5 October 2026
Updated: 15 October 2026
Weakness: CWE-269

Vendor fix

Update to version 1.3.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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