High severity7.5NVD Advisory· Published Mar 26, 2026· Updated Jul 15, 2026
CVE-2026-32748
CVE-2026-32748
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
6cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*range: <7.5
- (no CPE)range: < 7.5
- osv-coords3 versions
< 1.0.1-2.module_el8.6.0+2741+01592ae8+ 2 more
- (no CPE)range: < 1.0.1-2.module_el8.6.0+2741+01592ae8
- (no CPE)range: < 1.0.1-2.module_el8.6.0+2741+01592ae8
- (no CPE)range: < 7:5.5-22.el9_7.4
Patches
Vulnerability mechanics
References
18- www.openwall.com/lists/oss-security/2026/03/25/3nvdMailing ListMitigationPatchThird Party Advisory
- github.com/squid-cache/squid/commit/703e07d25ca6fa11f52d20bf0bb879e22ab7481bnvdPatch
- github.com/squid-cache/squid/security/advisories/GHSA-f9p7-3jqg-hhvqnvdMitigationPatchVendor Advisory
- access.redhat.com/errata/RHSA-2026:10255nvd
- access.redhat.com/errata/RHSA-2026:10256nvd
- access.redhat.com/errata/RHSA-2026:10257nvd
- access.redhat.com/errata/RHSA-2026:11901nvd
- access.redhat.com/errata/RHSA-2026:20564nvd
- access.redhat.com/errata/RHSA-2026:20565nvd
- access.redhat.com/errata/RHSA-2026:20580nvd
- access.redhat.com/errata/RHSA-2026:6301nvd
- access.redhat.com/errata/RHSA-2026:8119nvd
- access.redhat.com/errata/RHSA-2026:8317nvd
- access.redhat.com/errata/RHSA-2026:8880nvd
- access.redhat.com/errata/RHSA-2026:9220nvd
- access.redhat.com/security/cve/CVE-2026-32748nvd
- bugzilla.redhat.com/show_bug.cginvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32748.jsonnvd
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