High 8.5Published Oct 16, 2026

CVE-2026-55543TuxGuitar: Arbitrary Code Execution via maliciously crafted `.tg` file

Updated under an hour ago (2026-10-19 09:50 UTC)

Does this affect you?

It affects helge17 tuxguitar. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for helge17 tuxguitar

Exploited in the last 30 days

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.

CVSS: 8.5 HIGH (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Weakness (CWE): CWE-94, CWE-470
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Oct 16, 2026
First seen by InfoSec Signals: Oct 16, 2026

Affected products

Affected products

helge17 tuxguitar helge17:tuxguitar (from the name)	before 2.1.0	CNA record

References

https://github.com/helge17/tuxguitar/security/advisories/GHSA-v66p-c82h-w3cqx-refsource-confirm
https://github.com/helge17/tuxguitar/commit/a7eef20e2e02ee454597d42c295327d9f098c636x-refsource-misc
https://github.com/helge17/tuxguitar/releases/tag/2.1.0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.