CVE-2026-54235 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-54235MEDIUM

vllm-project vllm — vLLM: temperature=NaN and temperature=Infinity bypass validation and propagate to GPU kernels

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   N   N   L    6.9   .0027   19.3     —

AFFECTED
  Product  Versions       Fixed
  vllm     < 0.23.1rc0 –  —

TIMELINE
  Jun 12  Reserved by GitHub_M
  Jun 22  EXPLOIT PUBLISHED — CVE-2026-54235 (vllm-project vllm). Public exploit reference added.
  Jun 22  Published (CNA: GitHub_M)

CWE-1287 · CNA: GitHub_M · CVSS v4.0 · 3 references · NVD status: Analyzed

Description

vLLM is an inference and serving engine for large language models (LLMs). Prior to 0.23.1rc0, ll temperature validation gates use comparison operators (<, >), which silently evaluate to False for NaN and for positive Infinity in Python's IEEE 754 float semantics. Both values pass every guard and propagate to GPU sampling kernels, where they produce undefined behavior or CUDA errors that can crash the inference worker. This vulnerability is fixed in 0.23.1rc0.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 12, 2026	Reserved	Reserved by GitHub_M
June 22, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-54235 (vllm-project vllm). Public exploit reference added.
June 22, 2026	Published	Published (CNA: GitHub_M)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
vllm-project	vllm	—	< 0.23.1rc0	—

Weaknesses

CWE-1287

References (3)

https://github.com/vllm-project/vllm/commit/d598d239737cfa37bcfcb98886ec3f3557fc7198 [Patch]
https://github.com/vllm-project/vllm/pull/45116 [Issue Tracking]
https://github.com/vllm-project/vllm/security/advisories/GHSA-7h4p-rffg-7823 [Exploit, Third Party Advisory]

Authoritative record: CVE-2026-54235 at cve.org

Vendors: vllm-project

Weaknesses: CWE-1287

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-54235 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.