CVE-2026-115915: vLLM is an inference and serving engine for large language models

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HIGH 8.1REMOTEUPGRADE

CVE-2026-115915 is a high-severity flaw (CVSS 8.1) 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, ImageMediaIO passes attacker-controlled image bytes to Pillow through Image.open(BytesIO(data)) without restricting decoder selection, and the MIME label does not constrain the selected format. Image-capable request paths through parse_image() and fetch_image() can therefore dispatch an EPS payload to host components. A host with Ghostscript affected by CVE-2024-2

Why this priority

High severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.6% (top 50%)
CISA exploited list	No
Weakness	CWE-20, CWE-183
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 18:17 UTCPublished CVE record published
2026-10-28 15:37 UTCUpdated Record last modified

vllm vllm UPGRADE

Affected: >= 0.30.0 and < 0.32.0

Fixed in: 0.32.0

Safe to downgrade to: a release before 0.30.0

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.

3. If no update is available yet, DOWNGRADE to a release before 0.30.0 (Debian / Ubuntu)

apt-cache madison vllm sudo apt install vllm=<VERSION_BEFORE_0.30.0> sudo apt-mark hold vllm

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list vllm sudo dnf downgrade vllm-<VERSION_BEFORE_0.30.0> sudo dnf versionlock add vllm

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Advisories and coverage

Research and news

Vulners Bulletins: CVE-2026-115915 vLLM: Untrusted EPS inputs can trigger denial of service or Ghostscript RCE 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-2026-115915?

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

Is CVE-2026-115915 being exploited?

CVE-2026-115915 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-2026-115915 affect?

CVE-2026-115915 affects vllm. Severity is high (CVSS 8.1). vLLM is an inference and serving engine for large language models. Prior to 0.32.0, ImageMediaIO passes attacker-controlled image bytes to Pillow through Image.open(BytesIO(data)) without restricting decoder selection, and the MIME label do

How urgent is CVE-2026-115915?

Priority 46/100. High severity; Remotely exploitable, no login, no user action

Software pages

Ghostscript vulnerabilities

Related CVEs

CVE-2026-116172 MEDIUM 5.9 UPGRADE vLLM from 0.22.0 before 0.24.0 contains an improper input validation vulnerability in the Rust gRPC converter
CVE-2026-116173 MEDIUM 5.9 UPGRADE vLLM from 0.22.0 before 0.24.0 contains a denial of service vulnerability that allows remote attackers to term
CVE-2026-116174 MEDIUM 5.9 UPGRADE vLLM from 0.22.0 before 0.24.0 contains an improper input validation vulnerability in the Rust gRPC Generate a
CVE-2026-116175 MEDIUM 6.5 UPGRADE vLLM from 0.19.0 before 0.24.0 contains a decompression bomb vulnerability because the AudioMediaIO multimodal
CVE-2026-116176 HIGH 8.2 UPGRADE vLLM from 0.9.2 before 0.24.0 contains a server-side request forgery vulnerability that allows API callers to

References

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