libaspell.a in GNU Aspell before 0.60.8 has a buffer over-read for a string ending with a single '\0' byte, if the encoding is set to ucs-2 or ucs-4 outside of the application, as demonstrated by the ASPELL_CONF environment variable.
{ "versions": [ { "introduced": "0" }, { "fixed": "0.60.8" } ] }
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-20433.json"