Is CVE-2026-104974 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-104974 being exploited in the wild.

How severe is CVE-2026-104974?

High severity, with a CVSS score of 8.1, published 5 October 2026.

Is there a fix for CVE-2026-104974?

Yes: fixed in 1.4.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-104974 attacked?

It is attacked over the network.

Am I affected by CVE-2026-104974?

Check whether you run Plane at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-104974: Plane authentication bypass in account deactivation

CVE-2026-104974 · Severity: high · CVSS 8.1 · Published 2026-10-05

Plane is an open-source project management tool that teams use to organize work and coordinate projects. A vulnerability allows a deactivated user account to log in and automatically reactivate itself without administrator notification, potentially granting an ex-employee or compromised account access to sensitive project data and team information.

Technologies: Plane. Vendors: Plane.

Quick answers

Is CVE-2026-104974 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-104974 being exploited in the wild.
How severe is CVE-2026-104974?: High severity, with a CVSS score of 8.1, published 5 October 2026.
Which products and versions are affected?: Plane before 1.4.0.
Is there a fix for CVE-2026-104974?: Yes: fixed in 1.4.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-104974 attacked?: It is attacked over the network.
Am I affected by CVE-2026-104974?: Check whether you run Plane at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 1.4.0

Technical details

The authentication handler in Plane unconditionally sets is_active=True during login, silently reactivating any admin-deactivated account. An attacker with valid credentials to a deactivated account can authenticate successfully and gain full access to the account and associated workspaces. The vulnerability exists in the save_user_data() and complete_login_or_signup() functions and affects versions prior to 1.4.0.

Affected products

Plane Plane before 1.4.0

Timeline

2026-10-05: disclosed
2026-10-05: patched: Fix released in version 1.4.0

References

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