VDB
DEBIAN-CVE-2026-33526
DEBIAN-CVE-2026-33526
PUBLISHED
CVSS 7.5 HIGH
Squid is a caching proxy for the Web. Prior to version 7.5, due to heap Use-After-Free, 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. Version 7.5 contains a patch.
Risk Scores
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Debian:12 | squid | 5.7-2+deb12u1, 5.7-2+deb12u3, 5.7-2+deb12u5 |
| Debian:11 | squid | 6.1-1, 6.1-2, 6.10-1 |
| Debian:14 | squid | 0, 6.13-2, 7.1-1 |
| Debian:13 | squid | 7.2-1, 7.2-2, 0 |
Timeline
- Mar 26, 2026 CVE Published
- Apr 28, 2026 CVE Updated