by Kastro
Paper/Archive/CVE-2026-1868

CVE-2026-1868

GitLab GitLab AI Gateway — Improper Neutralization of Special Elements Used in a Template Engine in GitLab AI Gateway

EPSS 0.7%CVSS 9.9
critical.is priorityof 100
40
CVSS 9.9 (CNA)9.9 / 10 × 3029.7Not in CISA KEV+300.0EPSS percentile 53.4.534 × 2010.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
GitLab AI Gateway18.1.6 – < 18.6.218.6.2CNA
GitLab AI Gateway18.7.0 – < 18.7.118.7.1CNA
GitLab AI Gateway18.8.0 – < 18.8.118.8.1CNA

Scores by source

GitLab (CNA)9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

refgitlab.com/gitlab-org/modelops/applied-ml/code-suggestions/ai-assist/-/work_items/1850refabout.gitlab.com/releases/2026/02/06/patch-release-gitlab-ai-gateway-18-8-1-released