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CVE-2026-1388

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CVE-2026-1388

Published: Feb 25, 2026

Modified: Feb 26, 2026

PUBLISHED

CVSS v3.1

7.5

HIGH

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.

VendorProductVersions

GitLab

GitLab

affected
9.2 - < 18.7.5
affected
18.8 - < 18.8.5
affected
18.9 - < 18.9.1

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 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

References

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