CVE-2026-105633Plane: Issue Attachment Ownership Hijacking via Missing `issue_id` Scope
Updated under an hour ago ()
Does this affect you?
It affects makeplane plane. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.30%, higher than 21% of scored CVEs.
Do this next
Free account, 1 product
Plane is an open-source project management tool. Prior to 1.4.0, the V2 issue-attachment PATCH endpoint accepts issue_id in the URL but omits it from the database query. A project member can use an issue_id they control in the URL while targeting another user's attachment by its pk UUID. Because the server matches only pk, workspace, and project_id, it modifies the attachment regardless of the issue_id in the URL. When the attachment is pending and has not been confirmed as uploaded, the PATCH handler sets created_by = request.user and transfers attachment ownership to the attacker. This issue is fixed in 1.4.0.
- CVSS
- 7.1 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
- Weakness (CWE)
- CWE-639
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.30% (percentile 21)
- Assigned by
- GitHub_M
- NVD analysis
- Deferred
- Record last updated
- Oct 5, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
makeplane plane makeplane:plane (from the name) | before 1.4.0 | CNA record |
References
- https://github.com/makeplane/plane/security/advisories/GHSA-5mxw-g5mw-3v3wx-refsource-confirm
- https://github.com/makeplane/plane/pull/9315x-refsource-misc
- https://github.com/makeplane/plane/commit/5829f0febf0739494d576b60d4943d10d236bc96x-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.