Authentication Bypass in Plane Project Management Tool
CVE-2026-104974

8.1HIGH

Key Information:

Vendor

Makeplane

Status
Plane
Vendor
CVE Published:
5 October 2026

What is CVE-2026-104974?

The Plane project management tool has a vulnerability that allows a deactivated user account to log in using existing credentials. When a user's account is set to inactive, they should not be able to access the system. However, prior to version 1.4.0, these accounts could be reactivated silently upon successful login, without notifying the administrator. This flaw poses significant risks to user account management and security. The issue was resolved in version 1.4.0, which prevents deactivated accounts from logging in.

Affected Version(s)

plane < 1.4.0

References

https://github.com/makeplane/plane/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/makeplane/plane/pull/9290
x_refsource_MISC
https://github.com/makeplane/plane/pull/9304
x_refsource_MISC

CVSS V3.1

Score:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.