CVE-2026-112270
mediumSGLang through 0.5.22 with the Mooncake disaggregation backend contains an uncontrolled memory allocation vulnerability in handle_staging_rsp() that lets unaut…
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.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/disaggregation/common... disclosure@vulncheck.com
- https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/disaggregation/moonca... disclosure@vulncheck.com
- https://github.com/sgl-project/sglang/issues/45014 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/sglang-through-0.5.22-memory-exhaustion-via-mooncake-... disclosure@vulncheck.com