{"schema_version":"1","data":[{"id":3880,"advisory_id":"dbc1c3d2-dcda-4afb-ac68-c3badde0e71a","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-102634","source_published_at":"2026-09-29T16:04:17.381+00:00","published_at":"2026-10-24T21:42:44.998752+00:00","extraction_method":"structured","technologies":["core-cve","sglang"],"cve_ids":["CVE-2026-102634"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"SGLang through 0.5.20 Denial of Service via Duplicate bootstrap_room","summary":"SGLang through 0.5.20 in prefill/decode disaggregation mode fails to validate duplicate bootstrap_room fields in /generate requests with Mooncake KV transfer backend. Unauthenticated attackers can send concurrent requests with identical bootstrap_room values to crash scheduler processes or hang other users' requests until transfer timeout.","evidence":"cve:CVE-2026-102634","products":[{"name":{"value":"sglang","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"high","structured":{"id":"CVE-2026-102634","aliases":["CVE-2026-102634"],"metrics":[{"format":"CVSS","cvssV4_0":{"version":"4.0","baseScore":8.7,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","userInteraction":"NONE","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","subIntegrityImpact":"NONE","vulnIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","vulnConfidentialityImpact":"NONE"}},{"format":"CVSS","cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.5,"attackVector":"NETWORK","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"NONE"}}],"affected":[{"repo":"https://github.com/sgl-project/sglang","vendor":"sgl-project","product":"sglang","versions":[{"status":"affected","version":"0","versionType":"semver","lessThanOrEqual":"0.5.20"}],"packageURL":"pkg:pypi/sglang","collectionURL":"https://pypi.org/project/sglang","defaultStatus":"unaffected"}],"modified":"2026-09-29T17:33:09.537Z","provider":"cve","references":["https://github.com/sgl-project/sglang/issues/40125","https://github.com/sgl-project/sglang/blob/v0.5.20/python/sglang/srt/disaggregation/common/conn.py#L392-L393","https://github.com/sgl-project/sglang/blob/v0.5.20/python/sglang/srt/disaggregation/mooncake/conn.py#L2760-L2764","https://github.com/sgl-project/sglang/blob/v0.5.20/python/sglang/srt/disaggregation/decode.py#L942","https://github.com/sgl-project/sglang/blob/v0.5.20/python/sglang/srt/managers/io_struct.py#L281","https://github.com/sgl-project/sglang","https://www.vulncheck.com/advisories/sglang-through-0.5.20-denial-of-service-via-duplicate-bootstrap-room"],"provider_metadata":{"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-102634","role":"CISA Coordinator","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-09-29T17:33:03.800231Z"}}}],"references":[{"url":"https://github.com/sgl-project/sglang/issues/40125","tags":["exploit"]}],"providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-29T17:33:09.537Z"}}],"cna":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-09-29T16:04:17.381Z"}}},"related_cves":[{"value":"CVE-2026-102634","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":"/containers/cna/metrics"}}],"next_after":3880,"next_before":3880}