CVE-2026-1456
Allocation of Resources Without Limits or Throttling in GitLab
7.5
HIGH
CVSS 3.1
EPSS 0.04%
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.
How to fix CVE-2026-1456
To remediate CVE-2026-1456, upgrade the affected package to a fixed version below.
- —upgrade to 18.7.4 or later
Is CVE-2026-1456 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- >= 18.7.0, < 18.7.4, >= 18.8.0, < 18.8.4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |