CVE-2026-13006

NameCVE-2026-13006
DescriptionACE vulnerability in conditional configuration file processing by QOS.CH logback-core up to and including version 1.5.36 in Java applications, allows an attacker to execute arbitrary code circumventing existing protections against CVE-2025-11226 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 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. Please note that in logack version 1.5.37 conditional processing using Janino was removed.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1140922

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
logback (PTS)bullseye1:1.2.3-6vulnerable
bookworm1:1.2.11-3vulnerable
forky, sid, trixie1:1.2.11-6vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
logbacksource(unstable)(unfixed)1140922

Notes

[trixie] - logback <no-dsa> (Minor issue)
https://logback.qos.ch/news.html#1.5.35

Search for package or bug name: Reporting problems