{ "document": { "category": "csaf_base", "csaf_version": "2.0", "distribution": { "tlp": { "label": "WHITE" } }, "lang": "en", "notes": [ { "category": "legal_disclaimer", "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings." } ], "publisher": { "category": "coordinator", "contact_details": "cert@ncsc.nl", "name": "National Cyber Security Centre", "namespace": "https://www.ncsc.nl/" }, "title": "CVE-2026-32748", "tracking": { "current_release_date": "2026-04-01T15:16:54.592495Z", "generator": { "date": "2026-02-17T15:00:00Z", "engine": { "name": "V.E.L.M.A", "version": "1.7" } }, "id": "CVE-2026-32748", "initial_release_date": "2026-03-25T13:15:22.714922Z", "revision_history": [ { "date": "2026-03-25T13:15:22.714922Z", "number": "1", "summary": "CVE created.| Source created.| CVE status created. (valid)| Products created (1).| References created (5)." }, { "date": "2026-03-25T13:15:27.024206Z", "number": "2", "summary": "NCSC Score created." }, { "date": "2026-03-25T15:41:19.516950Z", "number": "3", "summary": "NCSC Score updated." }, { "date": "2026-03-25T18:44:53.239944Z", "number": "4", "summary": "Source created.| CVE status created. (valid)| Products connected (2)." }, { "date": "2026-03-25T18:44:54.797189Z", "number": "5", "summary": "NCSC Score updated." }, { "date": "2026-03-26T01:24:58.915896Z", "number": "6", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (3).| CWES updated (1)." }, { "date": "2026-03-26T01:25:01.208036Z", "number": "7", "summary": "NCSC Score updated." }, { "date": "2026-03-26T01:38:59.906787Z", "number": "8", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products created (1).| References created (3).| CWES updated (1)." }, { "date": "2026-03-26T01:39:04.910643Z", "number": "9", "summary": "NCSC Score updated." }, { "date": "2026-03-26T06:45:31.037732Z", "number": "10", "summary": "Description created for source." }, { "date": "2026-03-26T12:27:42.887943Z", "number": "11", "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (11).| Product Identifiers created (5).| Product Remediations created (11).| References created (5).| CWES updated (1).| Vendor_assessment created." }, { "date": "2026-03-26T12:27:45.492911Z", "number": "12", "summary": "NCSC Score updated." }, { "date": "2026-03-26T15:03:18.750071Z", "number": "13", "summary": "Source connected.| CVE status created. (valid)| EPSS created." }, { "date": "2026-03-26T15:03:24.438843Z", "number": "14", "summary": "NCSC Score updated." }, { "date": "2026-03-26T15:39:12.739417Z", "number": "15", "summary": "Unknown change." }, { "date": "2026-03-26T21:26:01.943882Z", "number": "16", "summary": "CVSS created.| Products connected (1).| Product Identifiers created (1)." }, { "date": "2026-03-26T21:26:12.863583Z", "number": "17", "summary": "NCSC Score updated." }, { "date": "2026-03-27T19:41:01.834866Z", "number": "18", "summary": "Source connected.| CVE status created. (valid)| Description created for source.| CVSS created.| CWES updated (1)." }, { "date": "2026-03-27T19:41:08.515571Z", "number": "19", "summary": "NCSC Score updated." }, { "date": "2026-03-27T20:58:36.341879Z", "number": "20", "summary": "EPSS updated." }, { "date": "2026-03-27T20:58:46.498130Z", "number": "21", "summary": "NCSC Score updated." }, { "date": "2026-03-28T07:41:01.432732Z", "number": "22", "summary": "Products connected (1)." }, { "date": "2026-03-28T07:42:55.204498Z", "number": "23", "summary": "NCSC Score updated." }, { "date": "2026-03-29T12:19:55.198186Z", "number": "24", "summary": "Product Remediations created (1)." }, { "date": "2026-03-29T12:20:03.926177Z", "number": "25", "summary": "NCSC Score updated." }, { "date": "2026-04-01T11:42:27.191659Z", "number": "26", "summary": "Products connected (2).| Product Identifiers created (2).| References created (2)." }, { "date": "2026-04-01T11:42:29.072795Z", "number": "27", "summary": "NCSC Score updated." }, { "date": "2026-04-01T15:16:31.809633Z", "number": "28", "summary": "EPSS updated." }, { "date": "2026-04-01T15:16:35.200370Z", "number": "29", "summary": "NCSC Score updated." } ], "status": "interim", "version": "29" } }, "product_tree": { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1317177", "product_identification_helper": { "cpe": "cpe:/o:oracle:linux:-" } } } ], "category": "product_name", "name": "Oracle Linux" } ], "category": "vendor", "name": "Oracle" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/unknown", "product": { "name": "vers:unknown/unknown", "product_id": "CSAFPID-1317175", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:5::server" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/10", "product": { "name": "vers:rpm/10", "product_id": "CSAFPID-2858634", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:10" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 10" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/6", "product": { "name": "vers:rpm/6", "product_id": "CSAFPID-1439321", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:6" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 6" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/7", "product": { "name": "vers:rpm/7", "product_id": "CSAFPID-1439315", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:7" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 7" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/8", "product": { "name": "vers:rpm/8", "product_id": "CSAFPID-1439317", "product_identification_helper": { "cpe": "cpe:/a:redhat:enterprise_linux:8" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 8" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/9", "product": { "name": "vers:rpm/9", "product_id": "CSAFPID-1439319", "product_identification_helper": { "cpe": "cpe:/o:redhat:enterprise_linux:9" } } } ], "category": "product_name", "name": "Red Hat Enterprise Linux 9" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2909366" } } ], "category": "product_name", "name": "squid" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 10" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-3023473" } } ], "category": "product_name", "name": "squid" }, { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-3023474" } } ], "category": "product_name", "name": "squid34" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 6" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-3023475" } } ], "category": "product_name", "name": "squid" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 7" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-3023476" } } ], "category": "product_name", "name": "squid" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 8" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:rpm/unknown", "product": { "name": "vers:rpm/unknown", "product_id": "CSAFPID-2909431" } } ], "category": "product_name", "name": "squid" } ], "category": "product_family", "name": "Red Hat Enterprise Linux 9" } ], "category": "vendor", "name": "Red Hat" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<7.5", "product": { "name": "vers:unknown/<7.5", "product_id": "CSAFPID-5906260" } } ], "category": "product_name", "name": "Squid" } ], "category": "vendor", "name": "Open Source" }, { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:microsoft/*", "product": { "name": "vers:microsoft/*", "product_id": "CSAFPID-5137304", "product_identification_helper": { "cpe": "cpe:2.3:a:microsoft:azl3_squid_6.13-3:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "azl3 squid 6.13-3 on Azure Linux 3.0" } ], "category": "product_family", "name": "Open Source Software" } ], "category": "vendor", "name": "Microsoft" }, { "branches": [ { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-1401334" } } ], "category": "product_name", "name": "squid" } ], "category": "product_family", "name": "bookworm" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:deb/unknown", "product": { "name": "vers:deb/unknown", "product_id": "CSAFPID-1401327" } } ], "category": "product_name", "name": "squid" } ], "category": "product_family", "name": "bullseye" } ], "category": "vendor", "name": "Debian" }, { "branches": [ { "branches": [ { "category": "product_version_range", "name": "vers:unknown/<7.5", "product": { "name": "vers:unknown/<7.5", "product_id": "CSAFPID-5913694", "product_identification_helper": { "cpe": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*" } } } ], "category": "product_name", "name": "squid" } ], "category": "vendor", "name": "squid-cache" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-32748", "cwe": { "id": "CWE-413", "name": "Improper Resource Locking" }, "notes": [ { "category": "description", "text": "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.", "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-32748" }, { "category": "description", "text": "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.", "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/32xxx/CVE-2026-32748.json" }, { "category": "description", "text": "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.", "title": "debian - https://security-tracker.debian.org/tracker/CVE-2026-32748" }, { "category": "description", "text": "A flaw was found in Squid. A remote attacker can exploit this vulnerability by sending specially crafted ICP (Internet Cache Protocol) traffic. This can lead to a Denial of Service (DoS) due to premature resource release and use-after-free vulnerabilities. This attack is possible in Squid deployments with explicitly enabled ICP support.\nThis Important flaw in Squid can lead to a Denial of Service when processing specially crafted Internet Cache Protocol (ICP) traffic. This vulnerability affects Red Hat products running Squid if ICP support is explicitly enabled by configuring a non-zero `icp_port`. Deployments where ICP is not enabled by default are not affected.", "title": "redhat - https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-32748.json" }, { "category": "description", "text": "Squid has Denial of Service in ICP Response handling", "title": "microsoft - https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Mar" }, { "category": "other", "text": "0.01281", "title": "EPSS" }, { "category": "other", "text": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "title": "CVSSV4" }, { "category": "other", "text": "8.7", "title": "CVSSV4 base score" }, { "category": "other", "text": "4.5", "title": "NCSC Score" }, { "category": "other", "text": "VENDOR FIX as product remediation category, The value of the most recent EPSS score, There is product data available from source Certbundde", "title": "NCSC Score top increasing factors" }, { "category": "other", "text": "Is related to (a version of) an uncommon product, There is product data available from source Debian, Is related to a product by vendor Debian, Is related to an uncommon product vendor, There is product_remediation data available from source Redhat", "title": "NCSC Score top decreasing factors" }, { "category": "details", "text": "Severity: 3\n", "title": "Vendor assessment" } ], "product_status": { "known_affected": [ "CSAFPID-5906260", "CSAFPID-1401327", "CSAFPID-1401334", "CSAFPID-5913694", "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-2858634", "CSAFPID-2909366", "CSAFPID-2909431", "CSAFPID-3023473", "CSAFPID-3023474", "CSAFPID-3023475", "CSAFPID-3023476", "CSAFPID-5137304", "CSAFPID-1317175", "CSAFPID-1317177" ] }, "references": [ { "category": "external", "summary": "Source - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0854.json" }, { "category": "external", "summary": "Source - debian", "url": "https://security-tracker.debian.org/tracker/CVE-2026-32748" }, { "category": "external", "summary": "Source - nvd", "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-32748" }, { "category": "external", "summary": "Source - cveprojectv5", "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/32xxx/CVE-2026-32748.json" }, { "category": "external", "summary": "Source - redhat", "url": "https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2026-32748.json" }, { "category": "external", "summary": "Source - first", "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0" }, { "category": "external", "summary": "Source - microsoft", "url": "https://api.msrc.microsoft.com/cvrf/v3.0/cvrf/2026-Mar" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-0854.json" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-0854" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-hpfx-h48q-gvwg" }, { "category": "external", "summary": "Reference - certbundde; cveprojectv5; nvd; redhat", "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-f9p7-3jqg-hhvq" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-84p4-hcx7-jj7c" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; redhat", "url": "https://github.com/squid-cache/squid/commit/703e07d25ca6fa11f52d20bf0bb879e22ab7481b" }, { "category": "external", "summary": "Reference - cveprojectv5; nvd; redhat", "url": "http://www.openwall.com/lists/oss-security/2026/03/25/3" }, { "category": "external", "summary": "Reference - redhat", "url": "https://www.cve.org/CVERecord?id=CVE-2026-32748" }, { "category": "external", "summary": "Reference - redhat", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-32748" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://access.redhat.com/errata/RHSA-2026:6301" }, { "category": "external", "summary": "Reference - certbundde", "url": "https://linux.oracle.com/errata/ELSA-2026-6301.html" } ], "remediations": [ { "category": "mitigation", "details": "To mitigate this issue, ensure that ICP support is not explicitly enabled in the Squid configuration. This can be achieved by commenting out or setting `icp_port` to `0` in the `squid.conf` file. After modifying the configuration, the Squid service must be reloaded or restarted for the changes to take effect.\nExample:\n```\n# icp_port 3130\n```\nor\n```\nicp_port 0\n```\nWarning: Reloading or restarting the Squid service may temporarily interrupt proxy services.", "product_ids": [ "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-2858634", "CSAFPID-2909366", "CSAFPID-2909431", "CSAFPID-3023473", "CSAFPID-3023474", "CSAFPID-3023475", "CSAFPID-3023476" ] }, { "category": "vendor_fix", "details": "CBL-Mariner Releases", "product_ids": [ "CSAFPID-5137304" ] } ], "scores": [ { "cvss_v3": { "version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 7.5, "baseSeverity": "HIGH" }, "products": [ "CSAFPID-1317175", "CSAFPID-1317177", "CSAFPID-1401327", "CSAFPID-1401334", "CSAFPID-1439315", "CSAFPID-1439317", "CSAFPID-1439319", "CSAFPID-1439321", "CSAFPID-2858634", "CSAFPID-2909366", "CSAFPID-2909431", "CSAFPID-3023473", "CSAFPID-3023474", "CSAFPID-3023475", "CSAFPID-3023476", "CSAFPID-5137304", "CSAFPID-5906260", "CSAFPID-5913694" ] } ], "title": "CVE-2026-32748" } ] }