CVE-2026-90970
Improper Neutralization of Special Elements Used in a Template Engine in GitLab AI Gateway
- Published
- Oct 2, 2026
- Updated
- Oct 2, 2026
- Assigning CNA
- GitLab
- Evidence observed
- Nov 4, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HModerate · next 30 days
- Percentile
- 97.1%
- Model date
- Nov 4, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
GitLab has remediated a vulnerability in the GitLab AI Gateway component affecting all versions of the AI Gateway from 18.1.6 before 19.2.4, 19.3 before 19.3.2, and 19.4 before 19.4.1 that, under certain conditions, could have allowed an authenticated user with Duo Agent Platform access to escape the prompt template sandbox via a specially crafted flow configuration, resulting in arbitrary command execution on the AI Gateway.
Sources
- gitlab-ai-gateway-cve-2026-90970Informational
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