CVE & CISA-KEV Catalog

CVE-2026-33526

HIGHEPSS 95th pctl

7.5

CVSS v3

Description

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.

CWE-416Use After Free CWE-826 CWE-825

How to fix

Remediation Available

squidDebian

Fixed in:6.13-2+deb13u2CVE-2026-33526

Fixed in:7.5-1CVE-2026-33526

libecapRed Hat / RHEL

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.s390x::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.src::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20564

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.aarch64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.src::squid:4RHSA-2026:20564

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.src::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.src::squid:4RHSA-2026:8317

libecapRocky

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20564

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.src::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.src::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.src::squid:4RHSA-2026:20564

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.s390x::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.aarch64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.src::squid:4RHSA-2026:20565

libecap-debuginfoRed Hat / RHEL

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20564

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.aarch64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.s390x::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20565

libecap-debuginfoRocky

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20564

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.aarch64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.s390x::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2026:8317

libecap-debugsourceRed Hat / RHEL

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.aarch64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.s390x::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20564

libecap-debugsourceRocky

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20564

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.aarch64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.s390x::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20580

libecap-develRocky

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.aarch64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.s390x::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20564

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20580

libecap-develRed Hat / RHEL

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.aarch64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20564

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2026:8317

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.x86_64::squid:4RHSA-2026:20580

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.ppc64le::squid:4RHSA-2026:20565

Fixed in:0:1.0.1-2.module+el8.1.0+4044+36416a77.s390x::squid:4RHSA-2026:20565

squidRed Hat / RHEL

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16.ppc64RHSA-2026:8880

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.s390x::squid:4RHSA-2026:8317

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.src::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.x86_64::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.aarch64::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.ppc64le::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.s390x::squid:4RHSA-2026:20565

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.src::squid:4RHSA-2026:8317

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.aarch64::squid:4RHSA-2026:8317

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.ppc64le::squid:4RHSA-2026:8317

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.x86_64::squid:4RHSA-2026:8317

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.x86_64::squid:4RHSA-2026:20580

Fixed in:7:4.11-4.module+el8.4.0+24287+ae9ea41b.11.src::squid:4RHSA-2026:20564

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.ppc64le::squid:4RHSA-2026:20580

Fixed in:7:4.11-4.module+el8.4.0+24287+ae9ea41b.11.x86_64::squid:4RHSA-2026:20564

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.src::squid:4RHSA-2026:20580

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

squidRocky

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16.ppc64RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:4.11-4.module+el8.4.0+24287+ae9ea41b.11.src::squid:4RHSA-2026:20564

Fixed in:7:4.11-4.module+el8.4.0+24287+ae9ea41b.11.x86_64::squid:4RHSA-2026:20564

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.src::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.x86_64::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.aarch64::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.ppc64le::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.s390x::squid:4RHSA-2026:20565

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.x86_64::squid:4RHSA-2026:20580

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.ppc64le::squid:4RHSA-2026:20580

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.src::squid:4RHSA-2026:8317

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.aarch64::squid:4RHSA-2026:8317

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.ppc64le::squid:4RHSA-2026:8317

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.s390x::squid:4RHSA-2026:8317

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.src::squid:4RHSA-2026:20580

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.x86_64::squid:4RHSA-2026:8317

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

squid-debuginfoRed Hat / RHEL

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:3.5.20-17.el7_9.16.ppc64RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.aarch64::squid:4RHSA-2026:8317

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.x86_64::squid:4RHSA-2026:8317

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.s390x::squid:4RHSA-2026:8317

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.ppc64le::squid:4RHSA-2026:8317

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.x86_64::squid:4RHSA-2026:20580

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.ppc64le::squid:4RHSA-2026:20580

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.aarch64::squid:4RHSA-2026:20565

Fixed in:7:4.11-4.module+el8.4.0+24287+ae9ea41b.11.x86_64::squid:4RHSA-2026:20564

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.s390x::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.ppc64le::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.x86_64::squid:4RHSA-2026:20565

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

squid-debuginfoRocky

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:3.5.20-17.el7_9.16.ppc64RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.aarch64::squid:4RHSA-2026:8317

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.s390x::squid:4RHSA-2026:20565

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.ppc64le::squid:4RHSA-2026:20580

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.ppc64le::squid:4RHSA-2026:8317

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.x86_64::squid:4RHSA-2026:20565

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.s390x::squid:4RHSA-2026:8317

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.aarch64::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.ppc64le::squid:4RHSA-2026:20565

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.x86_64::squid:4RHSA-2026:8317

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.x86_64::squid:4RHSA-2026:20580

Fixed in:7:4.11-4.module+el8.4.0+24287+ae9ea41b.11.x86_64::squid:4RHSA-2026:20564

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

squid-debugsourceRocky

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.ppc64le::squid:4RHSA-2026:20580

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.aarch64::squid:4RHSA-2026:8317

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.aarch64::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.s390x::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.ppc64le::squid:4RHSA-2026:20565

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.ppc64le::squid:4RHSA-2026:8317

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.x86_64::squid:4RHSA-2026:20565

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.x86_64::squid:4RHSA-2026:20580

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.x86_64::squid:4RHSA-2026:8317

Fixed in:7:4.11-4.module+el8.4.0+24287+ae9ea41b.11.x86_64::squid:4RHSA-2026:20564

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.s390x::squid:4RHSA-2026:8317

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

squid-debugsourceRed Hat / RHEL

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:6.10-5.el10_0.2RHSA-2026:11901

Fixed in:7:6.10-6.el10_1.3RHSA-2026:8119

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.x86_64::squid:4RHSA-2026:20565

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.x86_64::squid:4RHSA-2026:8317

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.s390x::squid:4RHSA-2026:8317

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.ppc64le::squid:4RHSA-2026:20565

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.s390x::squid:4RHSA-2026:20565

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.aarch64::squid:4RHSA-2026:8317

Fixed in:7:4.15-3.module+el8.6.0+24307+cba8e5bb.9.aarch64::squid:4RHSA-2026:20565

Fixed in:7:4.11-4.module+el8.4.0+24287+ae9ea41b.11.x86_64::squid:4RHSA-2026:20564

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.x86_64::squid:4RHSA-2026:20580

Fixed in:7:4.15-10.module+el8.10.0+24189+04a20c8a.11.ppc64le::squid:4RHSA-2026:8317

Fixed in:7:4.15-6.module+el8.8.0+24284+6402ee68.10.ppc64le::squid:4RHSA-2026:20580

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-5.el9_2.11RHSA-2026:10257

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.5-13.el9_4.5RHSA-2026:10255

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.5-22.el9_7.4RHSA-2026:6301

Fixed in:7:5.2-1.el9_0.10RHSA-2026:10256

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

Fixed in:7:5.5-19.el9_6.3RHSA-2026:9220

squid-migration-scriptRocky

Fixed in:7:3.5.20-17.el7_9.16.ppc64RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

squid-migration-scriptRed Hat / RHEL

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16.ppc64RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

squid-sysvinitRed Hat / RHEL

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16.ppc64RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

squid-sysvinitRocky

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16RHSA-2026:8880

Fixed in:7:3.5.20-17.el7_9.16.ppc64RHSA-2026:8880

squidUbuntu

Fixed in:5.9-0ubuntu0.22.04.5USN-8157-1

Fixed in:6.14-0ubuntu0.24.04.2USN-8157-1

Fixed in:6.14-0ubuntu0.25.10.2USN-8157-1

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

8.94%probability of exploitation in 30 days

95thpercentile

High risk: more likely to be exploited than 95% of all known CVEs.

References

Patch1

github.com

Vendor Advisory1

github.com

Third-Party Advisory1

openwall.com

Other references15

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	Fix

Embed a live status badge for CVE-2026-33526

Markdown

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HTML

<a href="https://tridentstack.com/cve/CVE-2026-33526"><img src="https://tridentstack.com/cve/badge/CVE-2026-33526.svg" alt="CVE-2026-33526"></a>

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-15.