An issue has been discovered in GitLab affecting all versions starting from 15.5 before 15.7.8, all versions starting from 15.8 before 15.8.4, all versions starting from 15.9 before 15.9.2. Due to improper permissions checks an unauthorised user was able to read, add or edit a users private snippet.
https://hackerone.com/reports/1751258
https://gitlab.com/gitlab-org/gitlab/-/issues/379598
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-3758.json