GHSA-qqpg-mvqg-649v
Logback allows an attacker to instantiate classes already present on the class path
At a glance
- Published
- Updated
- CVE
- CVE-2026-1225
- CVSS_V4
- CVSS:4.0/AV:L/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L
Description
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 packages
| Package | Versions |
|---|---|
| Maven · ch.qos.logback:logback-core | introduced 0, fixed 1.5.25 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-1225 ADVISORY
- https://github.com/qos-ch/logback/issues/997 WEB
- https://github.com/qos-ch/logback/commit/1f97ae1844b1be8486e4e9cade98d7123d3eded5 WEB
- https://github.com/qos-ch/logback PACKAGE
- https://logback.qos.ch/news.html#1.5.25 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |