---
title: "CVE-2026-77177: Open GenAI Stack - Server-Side Template Injection"
description: "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."
url: https://panop.io/threat-heartbeat/CVE-2026-77177/
---

# 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 ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-77177)

## 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](https://cwe.mitre.org/data/definitions/94.html)

## 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

- [https://nvd.nist.gov/vuln/detail/CVE-2026-77177](https://nvd.nist.gov/vuln/detail/CVE-2026-77177)
- [https://gist.github.com/abhi04anon/8ce0b68a5a7dda8a0501cbaf933173eb](https://gist.github.com/abhi04anon/8ce0b68a5a7dda8a0501cbaf933173eb)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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