CVE-2026-42253 - Vulnerability Details

Related Threat Clusters

• Critical Apache ActiveMQ Vulnerability Enables Security Header Injection Attacks

  A critical vulnerability in Apache ActiveMQ, tracked as CVE-2026-42253, has been disclosed, allowing attackers to inject malicious HTTP security headers through improperly handled message properties. This flaw affects…

  2 articles · Updated June 3, 2026

Recent Intelligence Reports

• Critical Apache ActiveMQ Vulnerability Allows Malicious Security Header Injections — Cybersecuritynews · June 3, 2026
• Critical Apache ActiveMQ Vulnerability Exposes Systems to Security Header Injection Attacks — Gbhackers · June 3, 2026

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