CVE-2021-20217: Privoxy

High severity, CVSS 7.5. EPSS: 1.4% chance of exploitation in the next 30 days.

A flaw was found in Privoxy in versions before 3.0.31. An assertion failure triggered by a crafted CGI request may lead to denial of service. The highest threat from this vulnerability is to system availability.

Affected products

• Privoxy Privoxy: before 3.0.31 (fixed in 3.0.31)

Published 2021-03-25. Last modified 2026-06-17.