Answer in brief
CVE-2026-90970 records a Critical severity (CVSS 9.9) vulnerability in Improper Neutralization of Special Elements Used in a Template Engine in GitLab AI Gateway. The current sources do not mark it as known exploited. The current feed maps GitLab/GitLab AI Gateway (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 9.9. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps GitLab/GitLab AI Gateway (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| GitLab/GitLab AI Gatewaygeneric | >=18.1.6 <19.2.4 || >=19.3 <19.3.2 || >=19.4 <19.4.1 | 19.2.4, 19.3.2, 19.4.1 |
Published upstream
Oct 2, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 2, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 2, 2026
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.
Quoted source text, attributed separately from HOL analysis.