Advisories for Maven/Ch.qos.logback/Logback-Core package

2026

Logback allows an attacker to instantiate classes already present on the class path

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 malicious Java class requires that said class is present on the user's class-path. In addition, the attacker must have write access to a configuration file. However, after successful …

2025

QOS.CH logback-core is vulnerable to Arbitrary Code Execution through file processing

QOS.CH logback-core versions up to 1.5.18 contain an ACE vulnerability in conditional configuration file processing in Java applications. This vulnerability allows an attacker to execute arbitrary code by compromising an existing logback configuration file or by injecting a malicious environment variable before program execution. A successful attack requires the Janino library and Spring Framework to be present on the user's class path. Additionally, the attacker must have write access to …

2024

QOS.CH logback-core Expression Language Injection vulnerability

ACE vulnerability in JaninoEventEvaluator by QOS.CH logback-core up to and including version 1.5.12 in Java applications allows attackers to execute arbitrary code by compromising an existing logback configuration file or by injecting an environment variable before program execution. Malicious logback configuration files can allow the attacker to execute arbitrary code using the JaninoEventEvaluator extension. A successful attack requires the user to have write access to a configuration file. Alternatively, the …

2023
2021
2017