CVE-2026-1456

HIGH EPSS 28.3%
Published Feb 11, 20264mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Feb 11, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
28.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-770

Affected Products 4

VendorProductVersionRange
gitlabgitlab*≥18.7.0  –  <18.7.4
gitlabgitlab*≥18.7.0  –  <18.7.4
gitlabgitlab*≥18.8.0  –  <18.8.4
gitlabgitlab*≥18.8.0  –  <18.8.4

References 3

  • about.gitlab.com https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/
    Release NotesVendor Advisory
  • gitlab.com https://gitlab.com/gitlab-org/gitlab/-/issues/587688
    Broken LinkIssue Tracking
  • hackerone.com https://hackerone.com/reports/3517928
    Permissions Required

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.