{"id":"CVE-2026-112269","revision":"19a92d4705a2436a9f1ad61cb3dfb41e","records":[{"revision":"19a92d4705a2436a9f1ad61cb3dfb41e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-112269","aliases":[],"title":"SGLang through 0.5.22 Memory Exhaustion via Unauthenticated Mooncake Decode Registrations","description":"SGLang through 0.5.22 with the Mooncake disaggregation backend accepts unauthenticated decode registration messages on the Prefill rank ZMQ PULL socket, allowing denial of service. Network-adjacent attackers can send many registrations with unique mooncake_session_id values and large nested-buffer frames to exhaust Prefill memory until the scheduler is OOM-killed.","state":0,"publishedAt":"2026-10-19T13:55:17.954+00:00","modifiedAt":"2026-10-19T18:06:43.345+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/45012","https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/disaggregation/mooncake/conn.py#L2885-L2935","https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/disaggregation/mooncake/conn.py#L889-L909","https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/disaggregation/common/utils.py#L47-L69","https://www.vulncheck.com/advisories/sglang-through-0.5.22-memory-exhaustion-via-unauthenticated-mooncake-decode-registrations"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-112269","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-112269","identifiers":["CVE-2026-112269"]},"retained":false,"historicalAffected":[]}],"coverage":[]}