CVE-2026-112270

SGLang through 0.5.22 with the Mooncake disaggregation backend contains an uncontrolled memory allocation vulnerability in handle staging rsp() that lets unauthenticated network-adjacent attackers exhaust Prefill memory. Attackers can obtain the rank address from the /route endpoint and send STAGING RSP messages with huge chunk idx values under fresh room IDs, causing the scheduler to be OOM-killed.