CVE-2026-1225: Qos.ch Sarl Logback-Core

Low severity, CVSS 1.8. EPSS: 0.2% chance of exploitation in the next 30 days.

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 instantiation, the instance is very likely to be discarded with no further ado.

Affected products

• Qos.ch Sarl Logback-Core: from 0.9.20, up to and including 1.5.24

Published 2026-01-22. Last modified 2026-06-17.