CVE-2026-55543

NameCVE-2026-55543
DescriptionTuxGuitar is an open-source guitar tablature editor. Prior to 2.1.0, an untrusted .tg file can set gervil.soundbank.path to reference an on-disk archive, including the .tg file itself, whose META-INF/services/javax.sound.midi.Soundbank entry names an attacker-supplied class stored in that archive. When a user opens the file, JARSoundbankReader uses an unverified class loader to load and instantiate that class, executing its constructor with the privileges of the TuxGuitar process. This issue is fixed in version 2.1.0.
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 Bugs1151103

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tuxguitar (PTS)bookworm1.5.6+dfsg1-6vulnerable
trixie1.6.6+dfsg1-3vulnerable
forky, sid2.0.0+dfsg1-3vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tuxguitarsource(unstable)(unfixed)1151103

Notes

https://github.com/helge17/tuxguitar/security/advisories/GHSA-v66p-c82h-w3cq
Fixed by: https://github.com/helge17/tuxguitar/commit/a7eef20e2e02ee454597d42c295327d9f098c636 (2.1.0)

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