CVE-2026-15969: Lmsys Sglang

Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days.

SGLang contains an unauthenticated RCE in /load_lora_adapter_from_tensors via bypass of SafeUnpickler’s incomplete denylist, allowing arbitrary command execution through crafted base64-encoded pickle payloads.

Affected products

• Lmsys Sglang: up to and including 0.5.15

Published 2026-07-30. Last modified 2026-08-04.