In the Backlog service, when you browse a milestone (for example : Release, Sprint), by default you land on a tab called "Overview" that lists items planned in the milestone. Some items can be in an inconsistent state, and the button to repair those inconsistent items is not protected against CSRFs.
Impact
An attacker could use this vulnerability to trick victims into repairing inconsistent items (creating artifact links from the release).
CVSSv3.1 score: 4.6 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:L)
References
CWE 352
Cross-Site Request Forgery - OWASP
CVE-2026-24007