CVEvulnerability
CVE-2026-1456
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-02-11
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-770
Description
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.7 before 18.7.4, and 18.8 before 18.8.4 that could have allowed an unauthenticated user to cause denial of service through CPU exhaustion by submitting specially crafted markdown files that trigger exponential processing in markdown preview.
Affected configurations
• gitlab gitlab (>= 18.7.0 < 18.7.4)
• gitlab gitlab (>= 18.8.0 < 18.8.4)
Related
Weakness · CWE (1)
- CWE-770 Allocation of Resources Without Limits or Throttling weakness
References
- https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/ Release Notes, Vendor Advisory
- https://gitlab.com/gitlab-org/gitlab/-/issues/587688 Broken Link, Issue Tracking
- https://hackerone.com/reports/3517928 Permissions Required