CVE-2026-104974: CWE-284: Improper Access Control in makeplane plane
Description
Plane is an open-source project management tool. Prior to 1.4.0, a user whose account has been deactivated by setting is_active=False can still log in with existing credentials. Successful authentication silently changes is_active back to True, reactivating the account without notifying the administrator. This issue is fixed in 1.4.0.
CVSS v3.1
Score 8.1high
Affected software
makeplane
plane
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-104974 describes an improper access control vulnerability (CWE-284) in the Plane project management tool. Before version 1.4.0, deactivated user accounts (is_active=False) could still authenticate successfully using existing credentials. The authentication process would silently reactivate the account by setting is_active back to True without administrator notification. This flaw allows unauthorized reactivation of accounts that were intended to be disabled. The vulnerability is fixed in Plane version 1.4.0.
Potential Impact
An attacker with credentials of a deactivated user can log in and reactivate the account without detection. This undermines account deactivation controls, potentially allowing unauthorized access to project management resources. The confidentiality and integrity of data accessible to the reactivated account are at risk. Availability is not affected.
Mitigation Recommendations
Upgrade Plane to version 1.4.0 or later, where this issue is fixed. Prior to upgrading, administrators should monitor for unexpected account reactivations and consider additional access controls or account management policies. Patch status is confirmed fixed in 1.4.0.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-02T18:16:13.629Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6ac3e69f2cdf04f65628b492
Added to database: 10/05/2026, 18:04:15 UTC
Last enriched: 10/05/2026, 18:18:18 UTC
Last updated: 10/05/2026, 19:34:03 UTC
Views: 8
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