CVE-2026-34481 - Apache Log4j JSON Template Layout: Improper serialization of non-finite floating-point values in JsonTemplateLayout

Related Vulnerabilities

• CVE-2026-40023: Apache Log4cxx's XMLLayout https://logging.apache.org/log4cxx/1.7.0/classlog4cxx_1_1xml_1_1XMLLayou MEDIUM
• CVE-2026-33704: Chamilo LMS is a learning management system. Prior to 1.11.38, any authenticated user (including stu HIGH
• CVE-2026-32252: Chartbrew is an open-source web application that can connect directly to databases and APIs and use HIGH
• CVE-2026-33092: Local privilege escalation due to improper handling of environment variables. The following products HIGH
• CVE-2026-34481: Apache Log4j's JsonTemplateLayout https://logging.apache.org/log4j/2.x/manual/json-template-layout. MEDIUM

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Threat Actors

• 索伦之眼 (US/UK)
• BlueMushroom (International)
• 魔罗桫 (International)
• 毒云藤 (China)