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CVE-2026-54232: vLLM is an inference and serving engine for large language models (LLMs)

47
This month
HIGH 8.8UPGRADE

CVE-2026-54232 is a high-severity flaw (CVSS 8.8) affecting vllm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

vLLM is an inference and serving engine for large language models (LLMs). Prior to 0.22.1, the vLLM Dockerfile is vulnerable to a dependency confusion attack through the flashinfer-jit-cache package. The package is installed from a custom index (flashinfer.ai/whl/) using --extra-index-url, but the package name was not registered on PyPI, and UV_INDEX_STRATEGY="unsafe-best-match" is set globally. An attacker who registers flashinfer-jit-cache on P

Why this priority

  • High severity
  • Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score8.8 (High)
Attack vectorNetwork (remote)
Attack complexityLow
Privileges neededNone
User interactionRequired
EPSS exploit chance0.6% (top 53%)
CISA exploited listNo
WeaknessCWE-427
Published2026-06-22
Last modified2026-10-25
Publisher (CNA): GitHub, Inc. · Vendor: vllm

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Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

vllm vllm UPGRADE
Affected: < 0.22.1
Fixed in: 0.22.1
Safe to downgrade to: no unaffected older release
1. Check installed version
apt-cache policy vllm || rpm -q vllm || vllm --version
2. UPGRADE to 0.22.1 (Debian / Ubuntu)
sudo apt update && sudo apt install --only-upgrade vllm
2. UPGRADE (RHEL / Amazon Linux / Fedora)
sudo dnf upgrade vllm
Note
Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.
Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-54232?

vllm: upgrade to 0.22.1. Exact commands for each OS are on this page.

Is CVE-2026-54232 being exploited?

CVE-2026-54232 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-54232 affect?

CVE-2026-54232 affects vllm. Severity is high (CVSS 8.8). vLLM is an inference and serving engine for large language models (LLMs). Prior to 0.22.1, the vLLM Dockerfile is vulnerable to a dependency confusion attack through the flashinfer-jit-cache package. The package is installed from a custom i

How urgent is CVE-2026-54232?

Priority 47/100. High severity; Public exploit reference

Software pages

PyPI packages vulnerabilities

Related CVEs

References

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