An issue has been discovered in GitLab EE affecting all versions starting from 8.12. A regular expression related to a file path resulted in the Advanced Search feature susceptible to catastrophic backtracking. Affected versions are >=8.12, <13.3.9,>=13.4, <13.4.5,>=13.5, <13.5.2.
https://gitlab.com/gitlab-org/gitlab/-/issues/257497
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13349.json