CVE-2026-15396 [MEDIUM] – IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server – Liber

IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server – Liberty are vulnerable to HTTP request smuggling, caused by improper parsing of the HTTP transfer-encoding request header. By sending a specially crafted HTTP transfer-encoding request header, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.