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Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 16.2 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. A low-privileged attacker can point a CI/CD Component to an incorrect path and cause the server to exhaust all available memory through an infinite loop and cause Denial of Service.

PUBLISHED Reserved 2023-10-27 | Published 2023-11-06 | Updated 2026-04-29 | Assigner GitLab




MEDIUM: 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')

Product status

Default status
unaffected

16.2 (semver) before 16.3.6
affected

16.4 (semver) before 16.4.2
affected

16.5 (semver) before 16.5.1
affected

Credits

Thanks [blakbat](https://hackerone.com/blakbat) for reporting this vulnerability through our HackerOne bug bounty program finder

References

gitlab.com/gitlab-org/gitlab/-/issues/428984 (GitLab Issue #428984) issue-tracking

hackerone.com/reports/2218566 (HackerOne Bug Bounty Report #2218566) technical-description exploit

gitlab.com/gitlab-org/gitlab/-/issues/428984 (GitLab Issue #428984) issue-tracking permissions-required

hackerone.com/reports/2218566 (HackerOne Bug Bounty Report #2218566) technical-description exploit permissions-required

cve.org (CVE-2023-5825)

nvd.nist.gov (CVE-2023-5825)

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