CVE-2026-86174 PUBLISHED

Plane through 1.4.2 Arbitrary Comment Write via Public Deploy Board

Assigner: VulnCheck
Reserved: 05.09.2026 Published: 05.09.2026 Updated: 05.09.2026

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 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
CVSS Score: 5.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	Low	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CVSS Score: 4.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	Low
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	makeplane
Product	plane
Versions	Default: unaffected affected from 0 to 1.4.2 (incl.)

CVE-2026-86174 PUBLISHED

Plane through 1.4.2 Arbitrary Comment Write via Public Deploy Board

Metrics

Product Status

Credits

References

Problem Types