CVE WatchOct 7, 2026

CVE-2026-104955

Plane is an open-source project management tool. Prior to 1.4.0, a Project Member with role 15 can send a PATCH request to the project-membe

CVSS

5.4

Medium

EPSS

0.2%

KEV

—

Exploit Today

0-100

Published: Oct 5, 2026 · Last modified: Oct 7, 2026 · CWE-269 · CWE-285

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-10-062026-10-21

Technical description

Plane is an open-source project management tool. Prior to 1.4.0, a Project Member with role 15 can send a PATCH request to the project-member update endpoint at /api/workspaces/{workspace_slug}/projects/{project_id}/members/{member_pk}/ to change another user's project role. The role-update logic blocks only a new role higher than the requester's role, so assigning the equal Member role bypasses the insufficient validation and promotes a Project Guest with role 5 to Member without Project Admin approval. This unauthorized promotion grants the guest the additional project capabilities associated with the Member role and allows a regular member to bypass project governance controls. This issue is fixed in 1.4.0.

Official references

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