GHSA-q322-x26r-gm37HighCVSS 6.5
SGLang through 0.5.22 with the Mooncake disaggregation backend contains an uncontrolled memory...
🔗 CVE IDs covered (1)
📋 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.
🔗 References (6)
- https://nvd.nist.gov/vuln/detail/CVE-2026-112270
- https://github.com/sgl-project/sglang/issues/45014
- https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/disaggregation/common/staging_handler.py#L505-L548
- https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/disaggregation/mooncake/conn.py#L2885-L2935
- https://www.vulncheck.com/advisories/sglang-through-0.5.22-memory-exhaustion-via-mooncake-staging-rsp-chunk-idx
- https://github.com/advisories/GHSA-q322-x26r-gm37