A flaw was found in Privoxy in versions before 3.0.31. A memory leak that occurs when decompression fails unexpectedly may lead to a denial of service. The highest threat from this vulnerability is to system availability.
https://www.privoxy.org/3.0.31/user-manual/whatsnew.html
https://www.openwall.com/lists/oss-security/2021/01/31/2