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Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 11.9 before 18.6.4, 18.7 before 18.7.2, and 18.8 before 18.8.2 that could have allowed an unauthenticated user to create a denial of service condition by sending crafted requests with malformed authentication data.

PUBLISHED Reserved 2025-12-02 | Published 2026-01-22 | Updated 2026-01-22 | 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

11.9 (semver) before 18.6.4
affected

18.7 (semver) before 18.7.2
affected

18.8 (semver) before 18.8.2
affected

Credits

Thanks [a92847865](https://hackerone.com/a92847865) for reporting this vulnerability through our HackerOne bug bounty program finder

References

gitlab.com/gitlab-org/gitlab/-/issues/582737 (GitLab Issue #582737) issue-tracking permissions-required

hackerone.com/reports/3439683 (HackerOne Bug Bounty Report #3439683) technical-description exploit permissions-required

about.gitlab.com/...21/patch-release-gitlab-18-8-2-released/

cve.org (CVE-2025-13927)

nvd.nist.gov (CVE-2025-13927)

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