CVE-2026-1388

HIGH
2026-02-25 [email protected]
7.5
CVSS 3.1
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CVSS Vector

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

Lifecycle Timeline

2
Analysis Generated
Mar 12, 2026 - 21:55 vuln.today
CVE Published
Feb 25, 2026 - 21:16 nvd
HIGH 7.5

Tags

Gitlab Denial Of Service

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.

Analysis

Gitlab versions up to 18.7.5 is affected by inefficient regular expression complexity (redos) (CVSS 7.5).

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Remediation

Within 24 hours: Identify all GitLab instances and document current versions. Within 7 days: Implement input validation and rate limiting controls on GitLab endpoints; monitor for abnormal regex processing patterns. …

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Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +38
POC: 0

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CVE-2026-1388 vulnerability details – vuln.today
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