WavPack 5.3.0 contains fixes for 4 OSS-Fuzz issues (none of which are CVEs or vulnerabilities):
In addition, a bug was fixed that could cause garbage characters to be appended to TXXX tags imported from ID3v2 tags. WavPack files affected by this bug can be repaired by simply using the WVTAG program with the --import-id3 option to re-import the tags.
Other minor fixes and improvements are listed in the official news file.