Payara

Payara maintains a focused open-source Java application server product line that, despite limited product scope, occupies a visible position in enterprise middleware deployments and frequently attracts security research attention. Vulnerabilities affecting the vendor skew toward serious outcomes, with a meaningful share reaching critical severity and a pronounced tendency to acquire public exploit code, while the recurring weaknesses—path traversal, cross-site scripting, open redirect, untrusted deserialization, and improper file access controls—reflect both the web-facing tier and object-serialization complexities inherent to Java middleware. Defenders should treat Payara disclosures as high-priority for affected infrastructure; live severity, exploitation, and current exposure counts are shown alongside this summary.