#VU124862 Improper input validation in vLLM - CVE-2026-22773
Published: April 4, 2026
Vulnerability identifier: #VU124862
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-22773
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
vLLM
vLLM
Software vendor:
vLLM
vLLM
Description
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper input handling in the Idefics3 vision model image processor when parsing a specially crafted 1x1 pixel image with ambiguous dimensions. A remote user can send a specially crafted image payload to cause a denial of service.
This issue affects vLLM serving multimodal models that use the Idefics3 architecture and results in an unhandled runtime error that terminates the EngineCore process.
Remediation
Install security update from vendor's website.