CVE-2026-1456
CVE-2026-1456 · Allocation of Resources Without Limits or Throttling in GitLab
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 6.5 · Medium · EPSS 0.4% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
gitlab
- Versions
- ≥ 18.7, < 18.7.4: Affected (semver)
- ≥ 18.8, < 18.8.4: Affected (semver)
Update to 18.7.4; Update to 18.8.4
gitlab Ubuntu:16.04:LTS
- Versions
- 8.4.3+dfsg-9
- 8.4.3+dfsg-12
- 8.5.8+dfsg-5
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
gitlab-agent Ubuntu:24.04:LTS
- Versions
- 14.1.0-1
- 16.1.3-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
gitlab-agent Ubuntu:25.10
- Versions
- 16.1.3-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
gitlab-agent Ubuntu:26.10
- Versions
- 16.1.3-2build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
gitlab-agent Ubuntu:26.04:LTS
- Versions
- 16.1.3-2
- 16.1.3-2build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published