Inclusion of Sensitive Information in Log Files in vLLM - CVE-2026-126395
Published: November 9, 2026 / Updated: November 13, 2026
Vulnerability identifier: #VU162982
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-126395
CWE-ID: CWE-532
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows an unauthenticated remote attacker to obtain a live heap address of the vLLM API server process in multimodal deployments.
The vulnerability exists due to vLLM's lowercase-only error sanitization regex failing to remove uppercase PIL image addresses when multimodal processing fails. An unauthenticated remote attacker can send a PNG to /tokenize and receive an address in an error response, even when an API key is configured.
Affected software
vLLM
How to mitigate CVE-2026-126395
Install security update from vendor's website.
vLLM - update to 0.31.0