Nginx is a web server and a reverse proxy server for HTTP, SMTP, POP3 and IMAP protocols, with a focus on high concurrency, performance and low memory usage. Security Fix: * HTTP/2: large amount of data request leads to denial of service * HTTP/2: flood using PRIORITY frames resulting in excessive resource consumption * HTTP/2: 0-length headers leads to denial of service For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.