CVE-2026-22778Public exploitNetwork attack vector

Pre-auth command execution via JPEG2000 heap overflow

Published Feb 2, 2026 · Updated Feb 2, 2026

Remote code execution in vLLM 0.8.3 through 0.14.0 allows remote attackers to run system commands via a malicious video URL. The multimodal loader fetches attacker-controlled video bytes, and OpenCV/FFmpeg honors a JPEG2000 cdef remap that writes the full-resolution Y plane into the smaller U-plane buffer; a PIL error also returns a BytesIO heap address that defeats ASLR. The default unauthenticated server is exposed only when it serves a video model, and the invocations route remains pre-authentication when an API key is configured.

CVSS severity9.8
Critical
EPSS probability3.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Remote code execution in vLLM 0.8.3 through 0.14.0 allows remote attackers to run system commands via a malicious video URL. The multimodal loader fetches attacker-controlled video bytes, and OpenCV/FFmpeg honors a JPEG2000 cdef remap that writes the full-resolution Y plane into the smaller U-plane buffer; a PIL error also returns a BytesIO heap address that defeats ASLR. The default unauthenticated server is exposed only when it serves a video model, and the invocations route remains pre-authentication when an API key is configured.

The record

CVE
CVE-2026-22778
Published
Feb 2, 2026
Updated
Feb 2, 2026
Vendor
vLLM Project
Product
vLLM
Classifications
CWE-122, CWE-532, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 0.8.3, < 0.14.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

vLLM Project · vLLMversion=>= 0.8.3, < 0.14.1

Published CVSS scores

9.8GitHubCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow
CWE-532Insertion of Sensitive Information into Log File
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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