CVE-2026-3988

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

25/03/2026

Last modified:

26/03/2026

Description

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 18.5 before 18.8.7, 18.9 before 18.9.3, and 18.10 before 18.10.1 that could have allowed an unauthenticated user to cause a denial of service by making the GitLab instance unresponsive due to improper input validation in GraphQL request processing.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

7.50

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:gitlab:gitlab:::::community:::*	18.5.0 (including)	18.8.7 (excluding)
cpe:2.3:a:gitlab:gitlab:::::enterprise:::*	18.5.0 (including)	18.8.7 (excluding)
cpe:2.3:a:gitlab:gitlab:::::community:::*	18.9.0 (including)	18.9.3 (excluding)
cpe:2.3:a:gitlab:gitlab:::::enterprise:::*	18.9.0 (including)	18.9.3 (excluding)
cpe:2.3:a:gitlab:gitlab:18.10.0::::community:::
cpe:2.3:a:gitlab:gitlab:18.10.0::::enterprise:::

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-3988

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools