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CVE-2026-1388

nvd nist
Published: Feb 25, 2026Modified: Jun 17, 2026

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7.5
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Exploitability: 3.9 / Impact: 3.6
Source: cve@gitlab.com (Secondary)

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 9.2 before 18.7.5, 18.8 before 18.8.5, and 18.9 before 18.9.1 that could have allowed an unauthenticated user to cause regular expression denial of service by sending specially crafted input to a merge request endpoint under certain conditions.

Affected (6)

Products: Gitlab: Gitlab
Gitlab
1 product
Gitlab
Configuration A
6 vulnerable
Vulnerable SoftwareAffected Versions
Gitlab
Gitlab
From 18.8.0 to 18.8.5
Gitlab
From 9.2.0 to 18.7.5
Gitlab
From 18.8.0 to 18.8.5
Gitlab
From 9.2.0 to 18.7.5
Gitlab
Version 18.9.0
Gitlab
Version 18.9.0

Related CWEs

CWE-1333
Inefficient Regular Expression Complexity
The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles.

References (3)

Source: cve@gitlab.com
Release NotesVendor Advisory
Source: cve@gitlab.com
Broken Link
Source: cve@gitlab.com
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Timeline

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