What is the CVSS score of CVE-2026-1868?

CVE-2026-1868 has a CVSS 3.1 base score of 9.9 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.0%.

Which versions of AI / ML are affected by CVE-2026-1868?

A critical vulnerability (CVSS 9.9) in GitLab AI Gateway's Duo Workflow Service affects all instances without an available patch, creating immediate risk of unauthorized access or system compromise.

How to fix or mitigate CVE-2026-1868?

Within 24 hours: inventory all GitLab AI Gateway instances and isolate affected systems from production networks if possible; enable enhanced logging and monitoring. Within 7 days: implement network segmentation to restrict access to the Duo Workflow Service component; apply WAF rules to block suspicious traffic patterns; disable the Duo Workflow Service if operationally feasible. Within 30 days: monitor GitLab security advisories for patch availability; conduct a comprehensive risk assessment of exposed systems; develop an emergency patching plan for immediate deployment when available.

AI / ML CVE-2026-1868

CRITICAL

Improper Neutralization of Special Elements Used in a Template Engine (CWE-1336)

2026-02-09 cve@gitlab.com

Gitlab Denial Of Service AI / ML

9.9

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.9 CRITICAL

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

CVE Published

Feb 09, 2026 - 07:16 nvd

CRITICAL 9.9

DescriptionCVE.org

GitLab has remediated a vulnerability in the Duo Workflow Service component of GitLab AI Gateway affecting all versions of the AI Gateway from 18.1.6, 18.2.6, 18.3.1 to 18.6.1, 18.7.0, and 18.8.0 in which AI Gateway was vulnerable to insecure template expansion of user supplied data via crafted Duo Agent Platform Flow definitions. This vulnerability could be used to cause Denial of Service or gain code execution on the Gateway. This has been fixed in versions 18.6.2, 18.7.1, and 18.8.1 of the GitLab AI Gateway.

AnalysisAI

GitLab AI Gateway's Duo Workflow Service has a CVSS 9.9 server-side template injection enabling code execution through the AI workflow system.

Technical ContextAI

The Duo Workflow Service in GitLab AI Gateway has a CWE-1336 SSTI vulnerability that allows attackers to inject template expressions that execute arbitrary code on the GitLab AI infrastructure.