Java
CVE-2026-1225
GHSA-qqpg-mvqg-649v
Lifecycle Timeline
3Blast Radius
ecosystem impact- 3,115 maven packages depend on ch.qos.logback:logback-core (88 direct, 3,028 indirect)
Ecosystem-wide dependent count for version 1.5.25.
DescriptionCVE.org
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.
AnalysisAI
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 instantia...
Technical ContextAI
This vulnerability (CWE-20: Improper Input Validation) affects configuration file processing by QOS.CH logback-core up to and including. 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 instantiatio
Affected ProductsAI
Product: configuration file processing by QOS.CH logback-core up to and including.
RemediationAI
Monitor vendor advisories for a patch.
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Same weakness CWE-20 – Improper Input Validation
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External POC / Exploit Code
Leaving vuln.today