CVE-2026-55543

UNKNOWN 0.0

TuxGuitar: Arbitrary Code Execution via maliciously crafted `.tg` file

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

TuxGuitar 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.

CWE	CWE-94 CWE-470
Vendor	helge17
Product	tuxguitar
Published	Oct 16, 2026

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Affected Versions

helge17 / tuxguitar

< 2.1.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/helge17/tuxguitar/security/advisories/GHSA-v66p-c82h-w3cq github.com: https://github.com/helge17/tuxguitar/commit/a7eef20e2e02ee454597d42c295327d9f098c636 github.com: https://github.com/helge17/tuxguitar/releases/tag/2.1.0