Medium 6.5Published Oct 5, 2026

CVE-2026-104969Plane: Cross-Tenant Cycle Issue Hijack via IDOR

Updated under an hour ago (2026-10-19 09:10 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for makeplane plane

Exploited in the last 30 days

Plane is an open-source project management tool. Prior to 1.4.0, the cycle-issues endpoint accepts issue UUIDs in the request body without validating that they belong to the caller's workspace. An authenticated user can add issues from any workspace to a cycle they control. If a victim issue is already assigned to a cycle, the operation removes it from the victim's cycle, causing a destructive cross-tenant write. This issue is fixed in 1.4.0.

CVSS: 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

makeplane plane makeplane:plane (from the name)	before 1.4.0	CNA record

References

https://github.com/makeplane/plane/security/advisories/GHSA-22g9-9xfv-q3frx-refsource-confirm
https://github.com/makeplane/plane/pull/9269x-refsource-misc
https://github.com/makeplane/plane/commit/81d9873d7f1cf1d1252ed53c12dd33696be73a89x-refsource-misc
https://github.com/makeplane/plane/releases/tag/v1.4.0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.