[UPDATE] [medium] vllm: Multiple vulnerabilities

CSIRTS triage

What

Multiple vulnerabilities allow an attacker to bypass security measures, cause a Denial-of-Service condition, manipulate data, or disclose confidential information.

Who is affected

Deployments of vllm are affected.

Urgency

Remediation is medium urgency due to the variety of potential impacts.

Action

Update to the latest version of vllm.

AI-assisted analysis generated from the source advisory — verify against the original.

Details

Source

CERT-Bund (BSI) Security Advisories (DE · national-cert · site)

Severity

medium

Published

2026-08-25

Exploitation

Not in CISA KEV at last sync

Language

Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1897

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

• Low exploitation riskCVE-2026-542330.42% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 35% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-542350.45% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 37% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-539230.48% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 39% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-542360.93% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 58% of all EPSS-scored CVEs.
• Low exploitation riskCVE-2026-54970.54% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 43% of all EPSS-scored CVEs.

Referenced CVEs

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

• mediumGHSA-6pr9-rp53-2pmc: vLLM: OOM Denial of Service via Audio Decompression Bombghsa
• mediumGHSA-hgg8-fqqc-vfmw: vLLM: incomplete CVE-2026-22778 fix leaks PIL repr addresses via Anthropic routerghsa
• mediumGHSA-5jv2-g5wq-cmr4: vLLM: GGUF dequantize kernel int truncation exposes uninitialized GPU memory in multi-ten…ghsa
• mediumGHSA-7h4p-rffg-7823: vLLM: temperature=NaN and temperature=Infinity bypass validation and propagate to GPU ker…ghsa
• highGHSA-wcwg-c5fc-9vrc: vLLM is vulnerable to an Out-of-Memory (OOM) Denial of Service (DoS) attack due to unboun…ghsa

Recent advisories for vllm

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

• mediumCVE-2026-78684: vLLM before 0.27.0 fails to properly classify DeepStream as a GPU backend and omits pixel-limi…nvd · 2026-08-25
• medium[UPDATE] [medium] vllm: Vulnerability allows code executioncert-bund · 2026-08-25
• medium[UPDATE] [medium] vllm: Vulnerability enables manipulation of datacert-bund · 2026-08-25
• medium[NEW] [medium] vllm: Vulnerability allows denial of servicecert-bund · 2026-08-24
• medium[UPDATE] [medium] vllm: Vulnerability allows denial of servicecert-bund · 2026-08-20
• medium[UPDATE] [medium] vllm: Multiple vulnerabilitiescert-bund · 2026-08-20

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