Vulnerability in sgl-project sglang

[ Description ]Official description

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.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/disaggregation/common/stag…
• github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/disaggregation/mooncake/co…
• github.com/sgl-project/sglang/issues/45014
• www.vulncheck.com/advisories/sglang-through-0.5.22-memory-exhaustion-via-mooncake-stagi…