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CVE-2026-46558 makeplane CVE debrief

CVE-2026-46558 is a high-severity vulnerability in Plane, an open-source project management tool. Prior to version 1.3.1, a cross-workspace asset authorization bypass allows any authenticated user to read, copy, delete, and overwrite assets in other Plane workspaces. This issue has been patched in version 1.3.1.

Vendor
makeplane
Product
plane
CVSS
HIGH 8.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-10
Original CVE updated
2026-06-12
Advisory published
2026-06-10
Advisory updated
2026-06-12

Who should care

Users of Plane, an open-source project management tool, should be aware of this vulnerability if they are using a version prior to 1.3.1.

Technical summary

The vulnerability has a CVSS score of 8.3 and is classified as HIGH severity. The CVSS vector is CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L. The weaknesses associated with this vulnerability are CWE-639 and CWE-862.

Defensive priority

HIGH

Recommended defensive actions

  • Upgrade to Plane version 1.3.1 or later to patch the vulnerability.
  • Review and restrict access to sensitive assets in Plane workspaces.

Evidence notes

The CVE record and NVD detail can be found at [cve-org] and [nvd], respectively. Additional information and mitigation steps are available at [ref-4] and [ref-5].

Official resources

CVE-2026-46558 was published on 2026-06-10T16:17:09.260Z and modified on 2026-06-12T00:49:47.167Z.