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Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 17.1 before 18.6.4, 18.7 before 18.7.2, and 18.8 before 18.8.2 that under certain circumstances could have allowed an authenticated user to create a denial of service condition by configuring malformed Wiki documents that bypass cycle detection.

PUBLISHED Reserved 2025-11-17 | Published 2026-01-22 | Updated 2026-01-22 | 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

17.1 (semver) before 18.6.4
affected

18.7 (semver) before 18.7.2
affected

18.8 (semver) before 18.8.2
affected

Credits

Thanks [sim4n6](https://hackerone.com/sim4n6) for reporting this vulnerability through our HackerOne bug bounty program finder

References

gitlab.com/gitlab-org/gitlab/-/issues/581060 (GitLab Issue #581060) issue-tracking permissions-required

hackerone.com/reports/3418023 (HackerOne Bug Bounty Report #3418023) technical-description exploit permissions-required

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

cve.org (CVE-2025-13335)

nvd.nist.gov (CVE-2025-13335)

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