CVE-2026-104974: Plane: Disabled User Auto-Reactivation on Login

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-05 · updated 2026-10-05
Weakness: CWE-284

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.

Affected products

makeplane plane: before 1.4.0

References

https://github.com/makeplane/plane/commit/1e8f3630c7697129b61eb57f2453f0bf09224920
https://github.com/makeplane/plane/commit/6c9dbb50434d16ea00a00d1574723dfd0c3d2446
https://github.com/makeplane/plane/pull/9290
https://github.com/makeplane/plane/pull/9304
https://github.com/makeplane/plane/releases/tag/v1.4.0
https://github.com/makeplane/plane/security/advisories/GHSA-rmmf-rj2q-3rrg
https://github.com/makeplane/plane/security/advisories/GHSA-rmmf-rj2q-3rrg

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