What is the CVSS score of CVE-2025-12983?

CVE-2025-12983 has a CVSS 3.1 base score of 3.5 (Low). CVSS vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L. EPSS exploitation probability: 0.0%.

Which versions of Gitlab are affected by CVE-2025-12983?

CVE-2025-12983 is a low-severity vulnerability in GitLab CE/EE affecting all (CVSS 3.5).

How to fix or mitigate CVE-2025-12983?

During next maintenance window: Apply vendor patches when convenient. Monitor vendor channels for updates.

Gitlab CVE-2025-12983

LOW

Memory Allocation with Excessive Size Value (CWE-789)

2025-11-15 cve@gitlab.com

Denial Of Service Gitlab

3.5

CVSS 3.1

CVSS VectorNVD

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:N/A:L

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

None

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:22 vuln.today

CVE Published

Nov 15, 2025 - 09:15 nvd

LOW 3.5

DescriptionNVD

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.

AnalysisAI

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. Rated low severity (CVSS 3.5), this vulnerability is remotely exploitable. No vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-789. 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. Affected products include: Gitlab. Version information: before 18.3.6.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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CVE-2025-12983 vulnerability details – vuln.today

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Gitlab CVE-2025-12983

CVSS VectorNVD

Lifecycle Timeline

DescriptionNVD

AnalysisAI

Technical ContextAI

RemediationAI

More from same product – last 7 days

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External POC / Exploit Code