CVSS 3.1 Score 8.6 of 10 (high)


Published Dec 4, 2023
Updated: Jan 19, 2024
CWE ID 416


CVE-2023-49288 is a vulnerability affecting Squid, a caching proxy for the Web. This vulnerability is classified as a Use-After-Free bug and can lead to a Denial of Service attack through collapsed forwarding. The affected versions of Squid range from 3.5 up to and including 5.9, but configurations with "collapsed_forwarding off" or without the directive are not vulnerable. To remediate the issue, users are advised to upgrade to Squid version 6.0.1. For those unable to upgrade, removing all collapsed_forwarding lines from squid.conf is recommended. This vulnerability has a base severity rating of HIGH and poses a potential danger to organizations as it allows for network-based attacks with high availability impact.

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