VULNERABILITY INTELLIGENCE

CVE-2026-32748

CVSS score7.5 HIGH
EPSS probability9.06%
CISA KEVNot currently listed
Published2026-03-26
Last modified2026-07-15
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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.

Weakness classification

  • security-advisories@github.com: CWE-413
  • 0b0ca135-0b70-47e7-9f44-1890c2a1c46c: CWE-826

Primary references