{"id":"CVE-2026-49252","sourceIdentifier":"security-advisories@github.com","published":"2026-06-18T21:16:29.643","lastModified":"2026-10-26T11:10:00.157","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"deepstream is a server that allows clients and backend services to sync data, send messages and make rpcs at scale. Versions prior to 10.0.5  are vulnerable to Prototype Pollution. Exploitation can lead to potential privilege escalation from any authenticated user with write permission to any record. This issue has been fixed in version 10.0.5."},{"lang":"es","value":"deepstream es un servidor que permite a los clientes y servicios de backend sincronizar datos, enviar mensajes y realizar RPC a escala. Las versiones anteriores a la 10.0.5 son vulnerables a la Contaminación de Prototipos. Su explotación puede conducir a una potencial escalada de privilegios desde cualquier usuario autenticado con permiso de escritura en cualquier registro. Este problema ha sido solucionado en la versión 10.0.5."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"deepstreamIO","product":"deepstream.io","versions":[{"version":"< 10.0.5","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L","baseScore":9.9,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"LOW"},"exploitabilityScore":3.1,"impactScore":6.0}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-06-22T15:10:20.891417Z","id":"CVE-2026-49252","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-1321"}]}],"references":[{"url":"https://github.com/deepstreamIO/deepstream.io/commit/54b8e2958a98df444b5b5d9a66e22872afd84e44","source":"security-advisories@github.com"},{"url":"https://github.com/deepstreamIO/deepstream.io/security/advisories/GHSA-9v98-6g37-x9g6","source":"security-advisories@github.com"}]}