CriticalCritical vulnerability
CVE-2026-77177 (CVSS 9.8)
NVD · officialPublished Sep 29, 2026Risk 50/100
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.
Technical details
CVSS
9.8
AV:NetworkAC:LowPR:NoneUI:NoneC:HighI:HighA:High
Evidence and sources
This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.
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