Expression Injection

Overview ch.qos.logback:logback-core is a logback-core module. Affected versions of this package are vulnerable to Expression Injection in the Janino-evaluated condition attribute of configuration elements, handled by IfModelHandler, whose denylist blocked only the literal new operator. A user wh...

CVE-2026-1225 Malicious logback.xml configuration file allows instantiation of arbitrary classes

ACE vulnerability in configuration file processing by QOS.CH logback-core up to and including version 1.5.24 in Java applications, allows an attacker to instantiate classes already present on the class path by compromising an existing logback configuration file. The instantiation of a potentially...

CVE-2025-11226 Conditional processing of logback.xml configuration file, in conjuction with Spring Framework and Janino

ACE vulnerability in conditional configuration file processing by QOS.CH logback-core up to and including version 1.5.18 in Java applications, allows an attacker to execute arbitrary code by compromising an existing logback configuration file or by injecting an environment variable before program...

CVE-2025-11226 Conditional processing of logback.xml configuration file, in conjuction with Spring Framework and Janino

ACE vulnerability in conditional configuration file processing by QOS.CH logback-core up to and including version 1.5.18 in Java applications, allows an attacker to execute arbitrary code by compromising an existing logback configuration file or by injecting an environment variable before program...