CVE-2026-115912: vLLM is an inference and serving engine for large language models

Q: How do I fix CVE-2026-115912?

vllm: upgrade to 0.32.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-115912 being exploited?

CVE-2026-115912 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-115912 affect?

CVE-2026-115912 affects vllm. Severity is high (CVSS 7.5). vLLM is an inference and serving engine for large language models. Prior to 0.32.0, an authenticated caller can place forged shared-memory address and monotonic_id values in public multimodal features.kwargs_data. In scale-out deployments w

Routine

HIGH 7.5UPGRADE

CVE-2026-115912 is a high-severity flaw (CVSS 7.5) 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. Prior to 0.32.0, an authenticated caller can place forged shared-memory address and monotonic_id values in public multimodal features.kwargs_data. In scale-out deployments with shared-memory multimodal caching enabled, workers trust those values and pass attacker-selected bytes to pickle.loads(), allowing arbitrary Python execution even when insecure serialization is disabled. Thi

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-502
Published	2026-10-26
Last modified	2026-10-28

Publisher (CNA): GitHub, Inc. · Vendor: vllm

Last updated 2026-10-28 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-26 17:17 UTCPublished CVE record published
2026-10-28 15:38 UTCUpdated Record last modified

vllm vllm UPGRADE

Affected: < 0.32.0

Fixed in: 0.32.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy vllm || rpm -q vllm || vllm --version

2. UPGRADE to 0.32.0 (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.

Advisories and coverage

Research and news

Vulners Bulletins: CVE-2026-115912 2026-10-26

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-2026-115912?

vllm: upgrade to 0.32.0. Exact commands for each OS are on this page.

Is CVE-2026-115912 being exploited?

CVE-2026-115912 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-2026-115912 affect?

CVE-2026-115912 affects vllm. Severity is high (CVSS 7.5). vLLM is an inference and serving engine for large language models. Prior to 0.32.0, an authenticated caller can place forged shared-memory address and monotonic_id values in public multimodal features.kwargs_data. In scale-out deployments w

How urgent is CVE-2026-115912?

Priority 37/100. High severity

Software pages

Python vulnerabilities

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References

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