Is CVE-2026-104969 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-104969 being exploited in the wild.

How severe is CVE-2026-104969?

Medium severity, with a CVSS score of 6.5, published 5 October 2026.

Is there a fix for CVE-2026-104969?

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-2026-104969 attacked?

It is attacked over the network.

Am I affected by CVE-2026-104969?

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-2026-104969: Plane cross-tenant IDOR in cycle-issues endpoint

CVE-2026-104969 · Severity: medium · CVSS 6.5 · Published 2026-10-05

Plane is an open-source project management tool used to organize work across teams and projects. An authenticated user with access to one workspace could exploit a flaw in the cycle management API to add or remove issues from cycles in other workspaces they don't have permission to access, causing data manipulation and potential loss of project planning visibility for other organizations.

Technologies: Plane. Vendors: Plane.

Quick answers

Is CVE-2026-104969 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-104969 being exploited in the wild.
How severe is CVE-2026-104969?: Medium severity, with a CVSS score of 6.5, published 5 October 2026.
Which products and versions are affected?: Plane prior to 1.4.0.
Is there a fix for CVE-2026-104969?: 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-2026-104969 attacked?: It is attacked over the network.
Am I affected by CVE-2026-104969?: 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 cycle-issues endpoint (and similar bulk endpoints for sub-issues, module issues, and issue relations) failed to validate that issue UUIDs in request bodies belonged to the caller's workspace, allowing cross-tenant insecure direct object reference (IDOR) attacks. An authenticated attacker could supply issue IDs from arbitrary workspaces and perform destructive writes, including removing issues from victim cycles. The fix (v1.4.0) adds workspace and project-scoped validation to all affected bulk endpoints.

Affected products

Plane Plane prior to 1.4.0

Timeline

2026-10-05: disclosed

References

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