CVE-2026-1456

Allocation of Resources Without Limits or Throttling in GitLab

Summary

Original description

The description as published by the source.

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.

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Affected packages

Bitnami gitlab

[{"type":"SEMVER","events":[{"introduced":"18.7.0"},{"fixed":"18.7.4"},{"introduced":"18.8.0"},{"fixed":"18.8.4"}]}]

Fix status by distribution

Fixed packages published by each distribution for this CVE

Ubuntu UBUNTU-CVE-2026-1456 gitlab

References

advisory about.gitlab.com
report gitlab.com
web hackerone.com
web nvd.nist.gov