CVE-2026-32748

{"id": "CVE-2026-32748", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-32748", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-26T14:19:13.990996Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", 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Lifecycle Support", "versions": [{"status": "unaffected", "version": "7:3.5.20-17.el7_9.16", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "versions": [{"status": "unaffected", "version": "8100020260408092701.489197e6", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid:4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.4"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "8040020260514123440.522a0ee4", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid:4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus_long_life:8.4"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On", "versions": [{"status": "unaffected", "version": "8040020260514123440.522a0ee4", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid:4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_aus:8.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support", "versions": [{"status": "unaffected", "version": "8060020260518090356.ad008a3a", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid:4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_tus:8.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Telecommunications Update Service", "versions": [{"status": "unaffected", "version": "8060020260518090356.ad008a3a", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid:4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "8060020260518090356.ad008a3a", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid:4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_tus:8.8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service", "versions": [{"status": "unaffected", "version": "8080020260514105733.63b34585", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid:4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:8.8"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "8080020260514105733.63b34585", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid:4", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:enterprise_linux:9"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "versions": [{"status": "unaffected", "version": "7:5.5-22.el9_7.4", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.0"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "7:5.2-1.el9_0.10", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_e4s:9.2"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions", "versions": [{"status": "unaffected", "version": "7:5.5-5.el9_2.11", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.4"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.4 Extended Update Support", "versions": [{"status": "unaffected", "version": "7:5.5-13.el9_4.5", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:rhel_eus:9.6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9.6 Extended Update Support", "versions": [{"status": "unaffected", "version": "7:5.5-19.el9_6.3", "lessThan": "*", "versionType": "rpm"}], "packageName": "squid", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "packageName": "squid", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}, {"cpes": ["cpe:/o:redhat:enterprise_linux:6"], "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "packageName": "squid34", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unknown"}]}], "published": "2026-03-26T01:16:26.850", "references": [{"url": "https://github.com/squid-cache/squid/commit/703e07d25ca6fa11f52d20bf0bb879e22ab7481b", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/squid-cache/squid/security/advisories/GHSA-f9p7-3jqg-hhvq", "tags": ["Mitigation", "Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "http://www.openwall.com/lists/oss-security/2026/03/25/3", "tags": ["Mailing List", "Mitigation", "Patch", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://access.redhat.com/errata/RHSA-2026:10255", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:10256", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:10257", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:11901", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20564", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20565", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:20580", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:6301", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:8119", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:8317", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:8880", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/errata/RHSA-2026:9220", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-32748", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2451577", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32748.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-413"}, {"lang": "en", "value": "CWE-416"}, {"lang": "en", "value": "CWE-826"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-826"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Squid es un proxy de almacenamiento en cach\u00e9 para la Web. Antes de la versi\u00f3n 7.5, debido a la liberaci\u00f3n prematura de recursos durante la vida \u00fatil esperada y errores de uso despu\u00e9s de liberaci\u00f3n en el heap, Squid es vulnerable a denegaci\u00f3n de servicio al manejar tr\u00e1fico ICP. Este problema permite a un atacante remoto realizar un ataque de denegaci\u00f3n de servicio fiable y repetible contra el servicio Squid usando el protocolo ICP. Este ataque est\u00e1 limitado a despliegues de Squid que habilitan expl\u00edcitamente el soporte ICP (es decir, configurar un 'icp_port' distinto de cero). Este problema _no puede_ ser mitigado denegando consultas ICP usando reglas de 'icp_access'. Este error est\u00e1 corregido en la versi\u00f3n 7.5 de Squid."}], "lastModified": "2026-07-15T02:20:00.957", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "9F62FE66-3319-4718-BD42-B374264D81E8", "versionEndExcluding": "7.5"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}