An issue was discovered in io/gpx/GPXDocumentReader.java in TuxGuitar 1.5.4. It uses misconfigured XML parsers, leading to XXE while loading GP6 (.gpx) and GP7 (.gp) tablature files.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-14940.json"
[ { "events": [ { "introduced": "0" }, { "last_affected": "1.5.4" } ] } ]