Description
An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.7 prior to 17.4.6, from 17.5 prior to 17.5.4, and from 17.6 prior to 17.6.2. It may have been possible for an attacker with a victim's `CI_JOB_TOKEN` to obtain a GitLab session token belonging to the victim.
Problem types
CWE-270: Privilege Context Switching Error
Product status
13.7 (semver) before 17.4.6
17.5 (semver) before 17.5.4
17.6 (semver) before 17.6.2
Credits
Thanks [yvvdwf](https://hackerone.com/yvvdwf) for reporting this vulnerability through our HackerOne bug bounty program
References
gitlab.com/gitlab-org/gitlab/-/issues/494694 (GitLab Issue #494694)
hackerone.com/reports/2724948 (HackerOne Bug Bounty Report #2724948)