Critical Apache ActiveMQ Vulnerability Allows Malicious Security Header Injections

A critical vulnerability in Apache ActiveMQ has been disclosed, allowing attackers to inject malicious HTTP security headers through improperly handled message properties, potentially leading to cross-site scripting and response manipulation attacks in affected deployments. Tracked as CVE-2026-42253, the issue impacts both Apache ActiveMQ and Apache ActiveMQ Web components. The flaw originates from the MessageServlet within […]

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