CVE-2023-49285: Squid-Cache Squid

High severity, CVSS 7.5. EPSS: 88.1% chance of exploitation in the next 30 days.

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a Buffer Overread bug Squid is vulnerable to a Denial of Service attack against Squid HTTP Message processing. This bug is fixed by Squid version 6.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

• Squid-Cache Squid: up to and including 6.4

Published 2023-12-04. Last modified 2026-06-17.