CVE-2021-20212: Privoxy

High severity, CVSS 7.5. EPSS: 2% chance of exploitation in the next 30 days.

A flaw was found in Privoxy in versions before 3.0.29. Memory leak if multiple filters are executed and the last one is skipped due to a pcre error leading to a system crash.

Affected products

• Privoxy Privoxy: before 3.0.29 (fixed in 3.0.29)

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