Medium 4.3Published Sep 5, 2026

CVE-2026-86174Plane through 1.4.2 Arbitrary Comment Write via Public Deploy Board

Updated under an hour ago (2026-10-19 07:10 UTC)

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It affects makeplane plane. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for makeplane plane

Exploited in the last 30 days

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.

CVSS: 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Sep 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

makeplane plane makeplane:plane (from the name)	through 1.4.2	CNA record

References

https://github.com/makeplane/plane/issues/9441issue-tracking
https://github.com/makeplane/plane/blob/v1.4.2/apps/api/plane/space/views/issue.py#L258-L275technical-description
https://github.com/makeplane/planeproduct
https://www.vulncheck.com/advisories/plane-through-1.4.2-arbitrary-comment-write-via-public-deploy-boardthird-party-advisory

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.