CVE-2026-22778
vLLM multimodal endpoint leak may enable RCE via heap overflow.
Is CVE-2026-22778 being exploited?
Not confirmed. CVE-2026-22778 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. EPSS currently estimates a 3.7% probability of exploitation in the next 30 days.
How severe is CVE-2026-22778?
CVE-2026-22778 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-2026-22778?
Yes. A fix has been recorded for CVE-2026-22778. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-22778 affect?
CVE-2026-22778 affects vLLM (0.8.3 - 0.14.0). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-22778?
Upgrade to vLLM 0.14.1+ now.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution via heap address leak enabling heap overflow with JPEG2000/OpenCV-FFmpeg.
Immediate action required
- affected>= 0.8.3 and < 0.14.1
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.