{"id":"CVE-2026-112270","revision":"63ad76438fd44c55a3467e076a9954ce","records":[{"revision":"63ad76438fd44c55a3467e076a9954ce","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-112270","aliases":[],"title":"SGLang through 0.5.22 Memory Exhaustion via Mooncake STAGING_RSP chunk_idx","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.","state":0,"publishedAt":"2026-10-19T13:55:18.694+00:00","modifiedAt":"2026-10-19T16:34:55.35+00:00","affected":[{"ecosystem":"Vendor product","name":"sglang","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"sgl-project\",\n                    \"product\": \"sglang\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"0.5.22\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:pypi/sglang\",\n                    \"repo\": \"https://github.com/sgl-project/sglang\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":7.1,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":6.5,"severity":"MEDIUM"}],"references":["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"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112270","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-112270","identifiers":["CVE-2026-112270"]},"retained":false,"historicalAffected":[]}],"coverage":[]}