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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.

PUBLISHED Reserved 2025-10-01 | Published 2025-10-01 | Updated 2025-10-01 | Assigner NCSC.ch




MEDIUM: 5.9CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:P/VC:H/VI:L/VA:L/SC:H/SI:L/SA:L/AU:N/RE:M/U:Green

Problem types

CWE-20 Improper Input Validation

Product status

Default status
affected

0.9.20
affected

1.5.19
unaffected

Credits

Heihu577 finder

References

logback.qos.ch/news.html

cve.org (CVE-2025-11226)

nvd.nist.gov (CVE-2025-11226)

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