CVE-2026-3059: Lmsys Sglang

Critical severity, CVSS 9.8. EPSS: 1.5% chance of exploitation in the next 30 days.

SGLang's multimodal generation module is vulnerable to unauthenticated remote code execution through the ZMQ broker, which deserializes untrusted data using pickle.loads() without authentication.

Affected products

• Lmsys Sglang: from 0.5.5, up to and including 0.5.9

Published 2026-03-12. Last modified 2026-06-17.