CVE-2026-90970 GitLab AI Gateway - Command Injection

GitLab AI Gateway 18.1.6 < 19.2.4, 19.3 < 19.3.2, and 19.4 < 19.4.1 contain a command injection caused by sandbox escape via specially crafted flow configuration in prompt template, letting authenticated users with Duo Agent Platform access execute arbitrary commands, exploit requires Duo Agent Platform access.

CVSS base score 9.9 /10
Critical
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Required
EPSS
0.94% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
2 October 2026
Updated
15 October 2026
Weakness
CWE-1336

Vendor fix

Update to GitLab AI Gateway 19.2.4, 19.3.2, 19.4.1 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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