Vulnerability · Published Oct 21, 2026 · Assigned by VulnCheck

CVE-2026-114050vLLM before 0.31.0 Remote Engine Crash via Forged Multimodal UUID

High 7.5

In plain English

A high-severity insufficient verification of data authenticity in vllm from vllm-project. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.2%top 89.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

vLLM before 0.31.0 uses a client-supplied multimodal uuid verbatim as cache identity with no consistency check on cache hits, allowing engine crashes. Unauthenticated attackers can desynchronize the P0/P1 processor caches to trigger a fatal token-placeholder mismatch, killing the entire serving instance until restarted.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	vllm	0.31.0	GHSA-p92p-rxj5-7p2x

Affected products (as reported)

Vendor	Product	Versions
vllm-project	vllm	0 – before 0.31.0

Weakness: CWE-345 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

GitHub Security Advisory (GHSA-p92p-rxj5-7p2x) vendor-advisory
VulnCheck Advisory: vLLM before 0.31.0 Remote Engine Crash via Forged Multimodal UUID third-party-advisory