{"schema":"threatline.record/2","record":{"id":"CVE-2026-112270","aliases":[],"summary":"SGLang through 0.5.22 Memory Exhaustion via Mooncake STAGING_RSP chunk_idx","details":"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.","categories":["Unclassified"],"product":"sglang","vendor":"sgl-project","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-112270","source_modified_at":"2026-10-19T16:34:55.350Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"sglang","vendor":"sgl-project","versions":[{"version":"0","lessThanOrEqual":"0.5.22","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":7.1,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00249,"percentile":0.15316,"score_date":"2026-10-23"},"published_at":"2026-10-19T13:55:18.694Z","modified_at":"2026-10-19T16:34:55.350Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-112270","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-19T16:34:55.350Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-112270","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/sgl-project/sglang/issues/45014","tags":["issue-tracking"]},{"source":"CVE List","url":"https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/disaggregation/common/staging_handler.py#L505-L548","tags":["technical-description"]},{"source":"CVE List","url":"https://github.com/sgl-project/sglang/blob/v0.5.22/python/sglang/srt/disaggregation/mooncake/conn.py#L2885-L2935","tags":["technical-description"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/sglang-through-0.5.22-memory-exhaustion-via-mooncake-staging-rsp-chunk-idx","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-19T15:35:58.138216Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-19T16:34:55.350Z","content_hash":"76c6db4d0d291ab609443e3adaa1be5ef7b7ccd37b1d0da818e39d57400f47f9"}}