A sensitive information disclosure vulnerability in GitLab affecting all versions from 15.0 prior to 15.8.5, 15.9 prior to 15.9.4 and 15.10 prior to 15.10.1 allows an attacker to view the count of internal notes for a given issue.
https://hackerone.com/reports/1829768
https://gitlab.com/gitlab-org/gitlab/-/issues/388242
https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-1710.json