CVE-2026-90970
CRITICAL 9.9GitLab 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.
17.5% modeled chance of exploitation in the next 30 days (97th percentile). Prioritize remediation.
Exploitation likelihood
17.5%chance of exploitation in 30 days · 97th percentile
Impact if exploited
9.9CVSS 3.1 · CRITICAL
- ConfidentialityHigh
- IntegrityHigh
- AvailabilityHigh
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ⚠Privileges: Requires a low-privilege account
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
✓ lowers the bar for an attacker · ⚠ raises it
Proof of concept
No public PoC is currently catalogued.
Search for new PoCs
Search GitHub now — results may be empty or unverified.
Tracked sources are checked daily for recent CVEs, including PoCs published after the original disclosure. A later release appears after a tracked source lists it and a refresh succeeds.
Data snapshot:
Weakness (CWE)
- CWE-1336: : Improper Neutralization of Special Elements Used in a Template Engine
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References and research data (JSON)
Unverified PoC candidates
Catalogue matches for further research. These repositories have not been validated as working exploits.
1 candidate
- https://github.com/techupdate24/gitlab-ai-gateway-cve-2026-90970
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PoC-in-GitHub · CVE-2026-90970
PoC-in-GitHub · CVE-2026-90970 · Updated 2026-10-03T11:02:40Z
All CVSS metrics
- CRITICAL 9.9 v3.1 · CNA Primary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H - CRITICAL 9.9 v3.1 · NVD Secondary
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References
Advisories
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-91651 EUVD · EUVD-2026-91651
Technical & other
- https://gitlab.com/gitlab-org/gitlab/-/work_items/628842CVE record · GitLab · Updated 2026-10-02T14:34:49.558Z
NVD · CVE-2026-90970 · Updated 2026-10-02T18:44:11.270