Imperva_gzip_bypass

Imperva Web Application Firewall WAF Contournamento delle richieste POST Imperva Cloud WAF era vulnerabile a un bypass che permette agli attaccanti di eludere le regole WAF quando inviano payload HTTP POST dannosi, come exploit log4j, SQL injection, esecuzione di comandi, directory traversal, XXE...

EUVD-2026-20914

A gzip decompression bomb vulnerability exists when Orthanc processes HTTP request with Content-Encoding: gzip. The server does not enforce limits on decompressed size and allocates memory based on attacker-controlled compression metadata. A specially crafted gzip payload can trigger excessive...

CVE-2026-28435

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, cpp-httplib httplib.h does not enforce Server::setpayloadmaxlength on the decompressed request body when using HandlerWithContentReader streaming ContentReader with Content-Encoding: gzip or other...

Internet Bug Bounty: CVE-2025-0725: Heap overflow in curl with Content-Encoding gzip and old libz versions

A vulnerability was reported in the curl project, where a heap overflow could be triggered by a malicious HTTP server serving abnormally large gzip headers. The vulnerability was caused by an integer overflow in curl's support for old libz versions when the Content-Encoding: gzip header was used...

CVE-2021-45468

Imperva Web Application Firewall WAF before 2021-12-23 allows remote unauthenticated attackers to use "Content-Encoding: gzip" to evade WAF security controls and send malicious HTTP POST requests to web servers behind the WAF...