CVE-2026-48746
Auth bypass in vLLM via ASGI/Starlette trust; API key not required (0.3.0–0.22.0).
Is CVE-2026-48746 being exploited?
Not confirmed. CVE-2026-48746 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 1.2% probability of exploitation in the next 30 days.
How severe is CVE-2026-48746?
CVE-2026-48746 is rated Critical with a CVSS score of 9.1. 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-2026-48746?
Yes. A fix has been recorded for CVE-2026-48746. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-48746 affect?
CVE-2026-48746 affects vLLM 0.3.0–0.22.0, ASGI servers, Starlette. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-48746?
Upgrade to 0.22.0+; redeploy; verify API-key enforcement.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated access to vLLM OpenAI API endpoints; potential data exposure and misuse.
Immediate action required
- affected>= 0.3.0 and < 0.22.0
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.