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Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.10 before 18.4.6, 18.5 before 18.5.4, and 18.6 before 18.6.2 that could have allowed an unauthenticated user to create a denial of service condition by sending crafted GraphQL queries that bypass query complexity limits.

PUBLISHED Reserved 2025-10-31 | Published 2025-12-11 | Updated 2025-12-11 | Assigner GitLab




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Problem types

CWE-770: Allocation of Resources Without Limits or Throttling

Product status

Default status
unaffected

11.10 (semver) before 18.4.6
affected

18.5 (semver) before 18.5.4
affected

18.6 (semver) before 18.6.2
affected

Credits

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

References

gitlab.com/gitlab-org/gitlab/-/issues/579152 (GitLab Issue #579152) issue-tracking permissions-required

hackerone.com/reports/3360710 (HackerOne Bug Bounty Report #3360710) technical-description exploit permissions-required

about.gitlab.com/...10/patch-release-gitlab-18-6-2-released/

cve.org (CVE-2025-12562)

nvd.nist.gov (CVE-2025-12562)

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