{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-06T21:28:11.678","vulnerabilities":[{"cve":{"id":"CVE-2019-16785","sourceIdentifier":"security-advisories@github.com","published":"2019-12-20T23:15:11.167","lastModified":"2024-11-21T04:31:11.193","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Waitress through version 1.3.1 implemented a \"MAY\" part of the RFC7230 which states: \"Although the line terminator for the start-line and header fields is the sequence CRLF, a recipient MAY recognize a single LF as a line terminator and ignore any preceding CR.\" Unfortunately if a front-end server does not parse header fields with an LF the same way as it does those with a CRLF it can lead to the front-end and the back-end server parsing the same HTTP message in two different ways. This can lead to a potential for HTTP request smuggling/splitting whereby Waitress may see two requests while the front-end server only sees a single HTTP message. This issue is fixed in Waitress 1.4.0."},{"lang":"es","value":"Waitress versión hasta 1.3.1, implementó una parte \"MAY\" del RFC7230 que declara: \"Aunque el terminador de línea para los campos de línea de inicio y encabezado es la secuencia CRLF, un receptor PUEDE reconocer un LF único como un terminador de línea e ignorar cualquier CR anterior\". Desafortunadamente, si un servidor front-end no analiza los campos de encabezado con un LF de igual forma que los que tienen un CRLF, puede conllevar a que el servidor front-end y el back-end analice el mismo mensaje HTTP de dos maneras diferentes. Esto puede conllevar a un posible tráfico no autorizado y una división de peticiones HTTP, por lo que Waitress puede visualizar dos peticiones mientras que el servidor front-end solo visualiza un solo mensaje HTTP. Este problema fue corregido en Waitress versión 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