CVE-2025-12983

GitLab has remediated an issue in GitLab CE/EE affecting all versions from 16.9 before 18.3.6, 18.4 before 18.4.4, and 18.5 before 18.5.2 that could have allowed an authenticated attacker to cause a denial of service condition by submitting specially crafted markdown content with nested formatting patterns.

CVSS v3 3.5 LOW

3.5^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://about.gitlab.com/releases/2025/11/12/patch-release-gitlab-18-5-2-released/	Release Notes Vendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/296257	Broken Link
https://hackerone.com/reports/3419588	Permissions Required

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:gitlab:gitlab:::::community:::*
	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*
	cpe:2.3:a:gitlab:gitlab:::::community:::*
	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*
	cpe:2.3:a:gitlab:gitlab:::::community:::*
	cpe:2.3:a:gitlab:gitlab:::::enterprise:::*

History

19 Oct 2026, 13:10

Type	Values Removed	Values Added
Summary		(es) GitLab ha remediado un problema en GitLab CE/EE que afecta a todas las versiones desde la 16.9 anteriores a la 18.3.6, la 18.4 anteriores a la 18.4.4, y la 18.5 anteriores a la 18.5.2 que podría haber permitido a un atacante autenticado causar una condición de denegación de servicio al enviar contenido markdown especialmente diseñado con patrones de formato anidados.

Information

Published : 2025-11-15 09:15

Updated : 2026-10-19 13:10

NVD link : CVE-2025-12983

Mitre link : CVE-2025-12983

CVE.ORG link : CVE-2025-12983

JSON object : View

Products Affected

gitlab

gitlab

CWE

CWE-789

Memory Allocation with Excessive Size Value

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