What’s Vulnerable › Vulnerabilities

CVE-2021-20276

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-09 · updated 2026-06-17
• Weakness: CWE-119

Description

A flaw was found in privoxy before 3.0.32. Invalid memory access with an invalid pattern passed to pcre_compile() may lead to denial of service.

Affected products

• Debian Linux: 9.0
• privoxy: before 3.0.32 — fixed in 3.0.32

How to fix

Upgrade to a fixed version: privoxy 3.0.32. Check the vendor advisory for mitigations.

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1936668
• https://lists.debian.org/debian-lts-announce/2021/03/msg00009.html
• https://security.gentoo.org/glsa/202107-16
• https://www.privoxy.org/announce.txt
• https://bugzilla.redhat.com/show_bug.cgi?id=1936668
• https://lists.debian.org/debian-lts-announce/2021/03/msg00009.html
• https://security.gentoo.org/glsa/202107-16
• https://www.privoxy.org/announce.txt

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