High-impact RCE in an open GenAI stack (ogx-ai) used by Meta (WhatsApp backend). Server compromise at scale and user-impacting services make this newsworthy.
CVE-2026-77177
Remote code execution via prompt-injection in Open GenAI Stack (Jinja2 eval).
Is CVE-2026-77177 being exploited?
Not confirmed. CVE-2026-77177 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-77177?
CVE-2026-77177 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-77177?
Not known from our data. No patch reference has been recorded for CVE-2026-77177, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-77177 affect?
CVE-2026-77177 affects Open GenAI Stack (ogx-ai) 2026-06-11, Meta AI backend (WhatsApp and other Meta services). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-77177?
Isolate affected instances, block/untrusted prompt input, disable unsafe template eval, apply vendor patch when available.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution on backend servers via unsanitized Jinja2 expression evaluation from prompt-injected input, enabling full system compromise and data access.
Immediate action required