CVE-2026-1868 | GitLab has remediated a vulnerability in the Duo Workflow Se… | CVSS 9.9 CRITICAL

Description

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.

Metadata

CVE ID: CVE-2026-1868
State: PUBLISHED
Assigner: GitLab
Reserved: 2026-02-03 22:33 UTC
Published: 2026-02-09 06:33 UTC
Last updated: 2026-02-09 15:46 UTC
Primary CWE: CWE-1336
CWE-1336: Improper Neutralization of Special Elements Used i…
Vendor / Product: GitLab / GitLab AI Gateway
Sources: cve.org · NVD

Severity & Metrics

9.9 CRITICAL CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
GitLab	GitLab AI Gateway	—	18.1.6 < 18.6.2, 18.7.0 < 18.7.1, 18.8.0 < 18.8.1

Weakness (CWE)

CWE	Source	Description
CWE-1336	cna	CWE-1336: Improper Neutralization of Special Elements Used in a Template Engine

CVSS scores (1)

Score	Severity	Version	Source	Vector
9.9	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References (2)