CVE-2026-1456

MEDIUM

6.5

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.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published2/11/2026

Last Modified2/12/2026

Sourcenvd

Honeypot Sightings0

Affected Products

gitlab:gitlab

Weaknesses (CWE)

CWE-770

References

https://about.gitlab.com/releases/2026/02/10/patch-release-gitlab-18-8-4-released/(cve@gitlab.com)

https://gitlab.com/gitlab-org/gitlab/-/issues/587688(cve@gitlab.com)

https://hackerone.com/reports/3517928(cve@gitlab.com)

IOC Correlations

No correlations recorded

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