CVE-2026-77177

CRITICAL CVSS 3.1: 9.8 EPSS 0.59%
Updated Sep 30, 2026
Meta
Parameter Value
CVSS 9.8 (CRITICAL)
Type CWE-94 (Code Injection)
Vendor Meta
Public PoC No

Open GenAI Stack (aka ogx-ai) 2026-06-11, as used in the Meta AI backend for WhatsApp and other products, allows code execution because prompt injection (with Jinja2 template syntax) can be used to achieve server-side expression evaluation without sanitization.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)