Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2026-32748

Squid is a caching proxy for the Web. Prior to version 7.5, due to premature release of resource during expected lifetime and heap Use-After-Free bugs, Squid is vulnerable to Denial of Service when handling ICP traffic. This problem allows a remote attacker to perform a reliable and repeatable Denial of Service attack against the Squid service using ICP protocol. This attack is limited to Squid deployments that explicitly enable ICP support (i.e. configure non-zero `icp_port`). This problem _cannot_ be mitigated by denying ICP queries using `icp_access` rules. This bug is fixed in Squid version 7.5.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.018
EPSS Ranking 82.7%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-32748


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