CVE-2026-86174
Plane through 1.4.2 Arbitrary Comment Write via Public Deploy Board
- State
- Published
- Severity
- 5.3 Medium
- Published
- Sep 5, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 5, 2026
Description
Plane through 1.4.2 fails to validate that issues belong to the deploy board's project in the public comment endpoint. Authenticated attackers can post comments to arbitrary issues across workspaces by supplying an issue_id parameter to the public deploy-board comment endpoint.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N | VulnCheck |
Weaknesses
- CWE-639 Authorization Bypass Through User-Controlled Key
Affected Products
| Product | Versions |
|---|---|
planemakeplane |
|
References
- GitHub Issue #9441issue-tracking
- IssueCommentPublicViewSet.createtechnical-description
- https://github.com/makeplane/planeproduct
- VulnCheck Advisory: Plane through 1.4.2 Arbitrary Comment Write via Public Deploy Boardthird-party-advisory
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