CVE-2026-86174

MEDIUM CVSS 4.0: 5.3 EPSS 0.20%
Updated Sep 16, 2026
Plane
Parameter Value
CVSS 5.3 (MEDIUM)
Affected Versions before 1.4.2
Type CWE-639 (Authorization Bypass)
Vendor Plane
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Plane Plane
cpe:2.3:a:plane:plane:*:*:*:*:*:*:*:*
<= 1.4.2