CVE-2026-93688: Sgl-Project Sglang

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

SGLang through 0.5.19 in prefill/decode disaggregation mode with Mooncake KV transfer backend fails to validate bootstrap_room values, allowing unbounded transfer state allocation. Unauthenticated attackers can reach the decode engine's POST /generate endpoint and submit arbitrary bootstrap_room values to exhaust prefill process memory until out-of-memory termination.

Affected products

• Sgl-Project Sglang: up to and including 0.5.19

Published 2026-09-18. Last modified 2026-09-22.