Resource exhaustion in vLLM - CVE-2026-105759
Published: October 6, 2026
Vulnerability identifier: #VU153332
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-105759
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to uncontrolled resource consumption in the vLLM Rust frontend track_http_metrics middleware when processing HTTP requests with arbitrary method tokens. A remote attacker can send requests using unique arbitrary HTTP method tokens to cause a denial of service.
Only deployments with the Rust frontend enabled are vulnerable.
Affected software
vLLM
How to mitigate CVE-2026-105759
Install security update from vendor's website.
vLLM - update to 0.30.0