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CVE-2026-86174

Plane through 1.4.2 Arbitrary Comment Write via Public Deploy Board

CVSS 4.0 5.3 MEDIUMCVSS 3.1 4.3 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-86174

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-86174

Published

plane

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "makeplane",
                    "product": "plane",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:github/makeplane/plane",
                    "versions": [
                        {
                            "version": "0",
                            "lessThanOrEqual": "1.4.2",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON