CVE-2026-86174

Plane through 1.4.2 Arbitrary Comment Write via Public Deploy Board

Published Sep 5, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Plane through 1.4.2 Arbitrary Comment Write via Public Deploy Board
First Time appeared Plane
Plane plane
Weaknesses CWE-639
CPEs cpe:2.3:a:plane:plane:*:*:*:*:*:*:*:*
Vendors & Products Plane
Plane plane
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 5.3, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Sep 24, 2026, 2:21 PM
Reserved
Sep 5, 2026, 10:40 AM
Status
Deferred
Published
Sep 5, 2026, 11:16 AM
Modified
Sep 16, 2026, 1:42 PM