CVE-2026-77177 Open GenAI Stack - Server-Side Template Injection

Open GenAI Stack (aka ogx-ai) contains a template injection caused by unsanitized Jinja2 template syntax in prompt injection, letting attackers achieve server-side code execution, exploit requires crafted prompt input.

CVSS base score 9.8 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.59% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Server-Side Template Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
29 September 2026
Updated
15 October 2026
Weakness
CWE-94

Vendor fix

Update to the latest version with proper input sanitization and template handling.

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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