Payara 7.2026.1.RC1 Arbitrary EJB Method Invocation via Insecure Reflection in Payara Server

Payara Server 7.2026.1.RC1 HTTP EJB endpoints rely on attacker-controlled reflection and JNDI lookups without authorization, enabling arbitrary EJB method invocation.

Payara Server exposes multiple HTTP-accessible EJB invocation mechanisms that depend on attacker-controlled reflection, dynamic class loading, and unsafe deserialization. Remote clients can perform arbitrary JNDI lookups, resolve attacker-supplied class names, and invoke EJB business methods without sufficient authorization enforcement or input restriction. Both the deprecated InvokeEJBServlet and other endpoints are affected in version 7.2026.1.RC1.

• Endpoints allow remote JNDI lookups and attacker-supplied class resolution
• Relies on attacker-controlled reflection, dynamic class loading, and unsafe deserialization
• Authorization enforcement and input restriction are insufficient, including in deprecated InvokeEJBServlet