CVE-2026-105629: Plane cross-tenant IDOR in estimate point deletion

CVE-2026-105629 · Severity: high · CVSS 7.1 · Published 2026-10-05

Plane is an open-source project management platform that helps teams organize work and track estimates. A flaw in the estimate point deletion endpoint allowed a member of one workspace to permanently delete estimate points from a completely different workspace by exploiting missing access controls. This breaks the isolation between customers' workspaces and exposes them to data destruction attacks.

Technologies: Makeplane Plane. Vendors: Makeplane.

Quick answers

Is CVE-2026-105629 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-105629 being exploited in the wild.
How severe is CVE-2026-105629?
High severity, with a CVSS score of 7.1, published 5 October 2026.
Which products and versions are affected?
Makeplane Plane prior to 1.4.0.
Is there a fix for CVE-2026-105629?
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-2026-105629 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-105629?
Check whether you run Makeplane 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 BulkEstimatePointEndpoint.destroy endpoint performed a bare primary-key lookup without verifying the estimate point belonged to the requesting user's workspace or project (CWE-639: IDOR). An authenticated attacker could supply any estimate point UUID in a URL under their own workspace to delete resources across workspace boundaries. The fix adds proper scoping to the lookup: estimate_id + project_id + workspace__slug validation before deletion.

Affected products

  • Makeplane Plane prior to 1.4.0

Timeline

  • 2026-10-05: disclosed
  • 2026-06-23: patched

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.