GHSA-25q3-v2hm-8vpf: vllm (CVE-2026-93592)

vLLM versions before 0.28.0 fail to validate the lower bound of token IDs in the /v1/embeddings and /pooling endpoints, allowing unauthenticated attackers to crash the engine by submitting negative...

CVSS 8.7 HighEPSS 0.0054 · 45th percentile

Published by the GitHub Advisory Database at 18 Sept 2026, 14:19 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

Package	Ecosystem	Affected	Fixed in
vllm	PyPI	<0.28.0	0.28.0

Identifiers

GHSA-25q3-v2hm-8vpf · CVE-2026-93592 · PYSEC-2026-3997

Weakness (CWE)

CWE-129

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

vLLM versions before 0.28.0 do not validate the lower bound of token IDs on the /v1/embeddings and /pooling endpoints. An unauthenticated attacker can send a single request with a negative token ID, which triggers a CUDA device-side assertion that breaks the GPU context and makes all later requests fail until the process restarts. Upgrade vLLM to version 0.28.0 or later.

Written 1 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.7	High	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N	CNA (VulnCheck)

CISA KEV Not listed.
EPSS 0.0054, the 45th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:09 UTC First seen by agentprime
31 Oct 2026, 14:09 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.