CVE-2025-11226

Description

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 execution. A successful attack requires the presence of Janino library and Spring Framework to be present on the user's class path. In addition, the attacker must  have write access to a configuration file. Alternatively, the attacker could inject a malicious environment variable pointing to a malicious configuration file. In both cases, the attack requires existing privilege.

How to fix CVE-2025-11226

To remediate CVE-2025-11226, upgrade the affected package to a fixed version below.

• —no fix listed
• —upgrade to 1.5.19 or later

Is CVE-2025-11226 being exploited?

Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0
• >= 1.4.0, < 1.5.19

CVSS scores

References (8)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2025-11226
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2025-11226
• PATCHgithub.com/qos-ch/logback
• WEBgithub.com/qos-ch/logback/commit/61f6a2544f36b3016e0efd434ee21f19269f1df7
• WEB