SB2026040405 - Improper input validation in vLLM
Published: April 4, 2026
Security Bulletin ID
SB2026040405
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper input validation (CVE-ID: CVE-2026-22773)
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 update from vendor's website.