CVE-2026-49017

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The StreamingInput class repeatedly appends an empty buffer and re-reads, causing the proxy-server worker handling the request to become permanently unresponsive with increasing CPU and memory consumption. An authenticated attacker can systematically exhaust all proxy-server workers, resulting in denial of service. The defect was introduced in Swift 2.36.0."}, {"lang": "es", "value": "En OpenStack Swift anterior a 2.36.2 y 2.37.2, el middleware s3api entra en un bucle infinito al procesar un cuerpo de solicitud PUT aws-chunked truncado. La clase StreamingInput a\u00f1ade repetidamente un b\u00fafer vac\u00edo y vuelve a leer, lo que provoca que el worker del proxy-server que maneja la solicitud se vuelva permanentemente no responsivo con un consumo creciente de CPU y memoria. Un atacante autenticado puede agotar sistem\u00e1ticamente todos los workers del proxy-server, lo que resulta en una denegaci\u00f3n de servicio. 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