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.

INFO

Published Date :

2026-02-11T11:04:15.246Z

Last Modified :

2026-02-11T15:40:00.821Z

Source :

GitLab
AFFECTED PRODUCTS

The following products are affected by CVE-2026-1456 vulnerability.

Vendors Products
Gitlab
  • Gitlab
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-1456.

URL Resource
https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/ cve-icon cve-icon
https://gitlab.com/gitlab-org/gitlab/-/issues/587688 cve-icon cve-icon
https://hackerone.com/reports/3517928 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact