A specially crafted request could be used to confirm the existence of files hosted on object storage services, without disclosing their contents. This vulnerability affects GitLab CE/EE 12.10 and later through 13.0.1
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13268
Reference (s):
- https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13268.json
- https://gitlab.com/gitlab-org/gitlab/-/issues/214220
- https://hackerone.com/reports/848415