{"id":"CVE-2026-32748","aliases":["ALSA-2026:6301","ALSA-2026:8119","ALSA-2026:8317","AZL-80768","CLSA-2026-1774874340","CLSA-2026-1774874764","CLSA-2026-1774877548","CLSA-2026-1774946829","CLSA-2026-1774947465","CLSA-2026-1774947708","CLSA-2026-1775040191","CLSA-2026-1775062103","CLSA-2026-1775062580","CLSA-2026-1775210281","CLSA-2026-1775688811","CLSA-2026-1775724625","CLSA-2026-1775734284","CLSA-2026-1776173582","CLSA-2026-1776174115","CLSA-2026-1776174481","DEBIAN-CVE-2026-32748","EUVD-2026-16056","GHSA-f9p7-3jqg-hhvq","MGASA-2026-0094","OESA-2026-1795","OESA-2026-1796","OESA-2026-1797","OESA-2026-1800","RHSA-2026:10255","RHSA-2026:10256","RHSA-2026:10257","RHSA-2026:11901","RHSA-2026:20564","RHSA-2026:20565","RHSA-2026:20580","RHSA-2026:6301","RHSA-2026:8119","RHSA-2026:8317","RHSA-2026:8880","RHSA-2026:9220","RLSA-2026:6301","RLSA-2026:8119","RLSA-2026:8317","SUSE-SU-2026:24224-1","SUSE-SU-2026:4621-1","SUSE-SU-2026:4909-1","UBUNTU-CVE-2026-32748","USN-8157-1","USN-8941-1","openSUSE-SU-2026:22080-1"],"status":"published","title":"Squid has Denial of Service in ICP Response handling","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.","severity":{"version":"4.0","score":8.7,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.09065,"percentile":0.95331,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-413","CWE-416","CWE-826"],"published":"2026-03-26T00:11:01Z","modified":"2026-11-05T05:40:51Z","fixes":[{"ecosystem":"Azure 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has Denial of Service in ICP Response handling","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.","status":"published","published":"2026-03-26T00:11:01.424Z","modified":"2026-07-15T01:07:40.483Z","cvss":[{"version":"4.0","score":8.7,"vector":"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","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-413","CWE-416","CWE-826","CWE-826"],"updated_at":"2026-11-02T14:19:57.100857Z"}],"euvd":[{"id":"EUVD-2026-16056","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.","status":"published","published":"2026-03-26T00:11:01Z","modified":"2026-07-15T01:07:40Z","cvss":[{"version":"4.0","score":8.7,"vector":"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","level":"high"}],"updated_at":"2026-11-02T18:19:56.47701Z"}],"nvd":[{"id":"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.","status":"published","published":"2026-03-26T01:16:26.85Z","modified":"2026-07-15T02:20:00.957Z","cvss":[{"version":"4.0","score":8.7,"vector":"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","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-413","CWE-416","CWE-826"],"updated_at":"2026-11-02T14:12:11.678711Z"}],"osv":[{"id":"CVE-2026-32748","title":"Squid has Denial of Service in ICP Response handling","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.","status":"published","published":"2026-03-26T00:11:01.424Z","modified":"2026-10-28T11:11:43.507232539Z","cvss":[{"version":"4.0","score":8.7,"vector":"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","level":"high"}],"cwes":["CWE-413","CWE-416","CWE-826"],"updated_at":"2026-11-02T15:45:01.548715Z"},{"id":"DEBIAN-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.","status":"published","published":"2026-03-26T01:16:26.85Z","modified":"2026-10-01T03:03:22.015873206Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:54.232518Z"},{"id":"OESA-2026-1795","title":"squid security update","description":"Squid is a high-performance proxy caching server. It handles all requests in a single, non-blocking, I/O-driven process and keeps meta data and implements negative caching of failed requests.\r\n\r\nSecurity Fix(es):\n\nSquid is a widely used proxy caching server. Due to premature release of resources and heap Use-After-Free bugs during the handling of ICP (Internet Cache Protocol) traffic, Squid is vulnerable to Denial of Service. A remote attacker can cause the Squid service to crash by sending specially crafted ICP requests to a Squid instance with ICP support enabled, resulting in a reliable and repeatable Denial of Service attack. This vulnerability only affects Squid deployments that explicitly enable ICP support (i.e., configure a non-zero `icp_port`). It is important to note that this problem cannot be mitigated by denying ICP queries using `icp_access` rules.(CVE-2026-32748)\n\nSquid is a caching proxy for the Web. Prior to version 7.5, due to improper input validation, Squid is vulnerable to out of bounds read when handling ICP traffic. This problem allows a remote attacker to receive small amounts of memory potentially containing sensitive information when responding with errors to invalid ICP requests. 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.(CVE-2026-33515)\n\nSquid 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.(CVE-2026-33526)","status":"published","published":"2026-04-03T11:10:49Z","modified":"2026-08-18T01:19:44.240909635Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","level":"critical"}],"updated_at":"2026-11-02T15:52:45.721983Z"},{"id":"OESA-2026-1796","title":"squid security update","description":"Squid is a high-performance proxy caching server. It handles all requests in a single, non-blocking, I/O-driven process and keeps meta data and implements negative caching of failed requests.\r\n\r\nSecurity Fix(es):\n\nSquid is a widely used proxy caching server. Due to premature release of resources and heap Use-After-Free bugs during the handling of ICP (Internet Cache Protocol) traffic, Squid is vulnerable to Denial of Service. A remote attacker can cause the Squid service to crash by sending specially crafted ICP requests to a Squid instance with ICP support enabled, resulting in a reliable and repeatable Denial of Service attack. This vulnerability only affects Squid deployments that explicitly enable ICP support (i.e., configure a non-zero `icp_port`). It is important to note that this problem cannot be mitigated by denying ICP queries using `icp_access` rules.(CVE-2026-32748)\n\nSquid is a caching proxy for the Web. Prior to version 7.5, due to improper input validation, Squid is vulnerable to out of bounds read when handling ICP traffic. This problem allows a remote attacker to receive small amounts of memory potentially containing sensitive information when responding with errors to invalid ICP requests. 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.(CVE-2026-33515)\n\nSquid 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.(CVE-2026-33526)","status":"published","published":"2026-04-03T11:10:49Z","modified":"2026-08-18T01:19:45.843990324Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","level":"critical"}],"updated_at":"2026-11-02T15:52:45.721983Z"},{"id":"OESA-2026-1797","title":"squid security update","description":"Squid is a high-performance proxy caching server. It handles all requests in a single, non-blocking, I/O-driven process and keeps meta data and implements negative caching of failed requests.\r\n\r\nSecurity Fix(es):\n\nSquid is a widely used proxy caching server. Due to premature release of resources and heap Use-After-Free bugs during the handling of ICP (Internet Cache Protocol) traffic, Squid is vulnerable to Denial of Service. A remote attacker can cause the Squid service to crash by sending specially crafted ICP requests to a Squid instance with ICP support enabled, resulting in a reliable and repeatable Denial of Service attack. This vulnerability only affects Squid deployments that explicitly enable ICP support (i.e., configure a non-zero `icp_port`). It is important to note that this problem cannot be mitigated by denying ICP queries using `icp_access` rules.(CVE-2026-32748)\n\nSquid is a caching proxy for the Web. Prior to version 7.5, due to improper input validation, Squid is vulnerable to out of bounds read when handling ICP traffic. This problem allows a remote attacker to receive small amounts of memory potentially containing sensitive information when responding with errors to invalid ICP requests. 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.(CVE-2026-33515)\n\nSquid 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.(CVE-2026-33526)","status":"published","published":"2026-04-03T11:10:49Z","modified":"2026-08-18T01:19:45.861638333Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","level":"critical"}],"updated_at":"2026-11-02T15:52:45.721983Z"},{"id":"OESA-2026-1800","title":"squid security update","description":"Squid is a high-performance proxy caching server. It handles all requests in a single, non-blocking, I/O-driven process and keeps meta data and implements negative caching of failed requests.\r\n\r\nSecurity Fix(es):\n\nSquid is a widely used proxy caching server. Due to premature release of resources and heap Use-After-Free bugs during the handling of ICP (Internet Cache Protocol) traffic, Squid is vulnerable to Denial of Service. A remote attacker can cause the Squid service to crash by sending specially crafted ICP requests to a Squid instance with ICP support enabled, resulting in a reliable and repeatable Denial of Service attack. This vulnerability only affects Squid deployments that explicitly enable ICP support (i.e., configure a non-zero `icp_port`). It is important to note that this problem cannot be mitigated by denying ICP queries using `icp_access` rules.(CVE-2026-32748)\n\nSquid is a caching proxy for the Web. Prior to version 7.5, due to improper input validation, Squid is vulnerable to out of bounds read when handling ICP traffic. This problem allows a remote attacker to receive small amounts of memory potentially containing sensitive information when responding with errors to invalid ICP requests. 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.(CVE-2026-33515)\n\nSquid 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.(CVE-2026-33526)","status":"published","published":"2026-04-03T11:10:49Z","modified":"2026-08-18T01:19:44.269123493Z","cvss":[{"version":"4.0","score":9.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H","level":"critical"}],"updated_at":"2026-11-02T15:52:45.721983Z"},{"id":"RHSA-2026:10255","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2026-04-24T10:06:45Z","modified":"2026-10-03T10:04:39Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:18.066978Z"},{"id":"RHSA-2026:10256","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2026-04-24T10:06:45Z","modified":"2026-10-03T10:04:40Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:18.066978Z"},{"id":"RHSA-2026:10257","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2026-04-24T10:06:46Z","modified":"2026-10-03T10:04:41Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:18.066978Z"},{"id":"RHSA-2026:11901","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2026-04-30T10:10:52Z","modified":"2026-10-03T10:05:07Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:18.066978Z"},{"id":"RHSA-2026:20564","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2026-05-26T10:07:30Z","modified":"2026-10-03T10:07:13Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:18.983284Z"},{"id":"RHSA-2026:20565","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2026-05-26T10:07:30Z","modified":"2026-10-03T10:07:13Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:18.983284Z"},{"id":"RHSA-2026:20580","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2026-05-26T10:07:37Z","modified":"2026-10-03T10:07:17Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:18.983284Z"},{"id":"RHSA-2026:6301","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2026-04-04T10:06:51Z","modified":"2026-10-03T10:14:17Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:21.91255Z"},{"id":"RHSA-2026:8119","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2026-04-15T10:10:28Z","modified":"2026-10-03T10:17:19Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:23.547034Z"},{"id":"RHSA-2026:8317","title":"Red Hat Security Advisory: squid:4 security update","status":"published","published":"2026-04-16T10:22:54Z","modified":"2026-10-03T10:17:20Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:23.547034Z"},{"id":"RHSA-2026:8880","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2026-04-20T10:12:35Z","modified":"2026-10-03T10:17:42Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:23.547034Z"},{"id":"RHSA-2026:9220","title":"Red Hat Security Advisory: squid security update","status":"published","published":"2026-04-21T10:11:01Z","modified":"2026-10-03T10:17:51Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:23.969672Z"},{"id":"RLSA-2026:6301","title":"Important: squid security update","description":"Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.\n\nSecurity Fix(es):\n\n* squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling (CVE-2026-33526)\n\n* Squid: Squid: Denial of Service via crafted ICP traffic (CVE-2026-32748)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-04-07T12:03:55.701474Z","modified":"2026-04-07T12:31:41.741803Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:26.449929Z"},{"id":"RLSA-2026:8119","title":"Important: squid security update","description":"Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.\n\nSecurity Fix(es):\n\n* squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling (CVE-2026-33526)\n\n* Squid: Squid: Denial of Service via crafted ICP traffic (CVE-2026-32748)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-04-15T12:07:10.074197Z","modified":"2026-04-15T12:30:06.143684Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:26.449929Z"},{"id":"RLSA-2026:8317","title":"Important: squid:4 security update","description":"Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.\n\nSecurity Fix(es):\n\n* squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling (CVE-2026-33526)\n\n* Squid: Squid: Denial of Service via crafted ICP traffic (CVE-2026-32748)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-04-16T00:01:17.37016Z","modified":"2026-04-16T00:30:07.042887Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:26.449929Z"},{"id":"UBUNTU-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.","status":"published","published":"2026-03-26T01:16:00Z","modified":"2026-10-21T23:11:56.160743627Z","cvss":[{"version":"4.0","score":8.7,"vector":"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","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:56:16.036833Z"},{"id":"ALSA-2026:6301","title":"Important: squid security update","description":"Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.  \n\nSecurity Fix(es):  \n\n  * squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling (CVE-2026-33526)\n  * Squid: Squid: Denial of Service via crafted ICP traffic (CVE-2026-32748)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-03-31T00:00:00Z","modified":"2026-10-29T11:32:37.152476692Z","updated_at":"2026-11-02T15:27:54.753319Z"},{"id":"ALSA-2026:8119","title":"Important: squid security update","description":"Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.  \n\nSecurity Fix(es):  \n\n  * squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling (CVE-2026-33526)\n  * Squid: Squid: Denial of Service via crafted ICP traffic (CVE-2026-32748)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-04-14T00:00:00Z","modified":"2026-10-29T11:58:17.443336Z","updated_at":"2026-11-02T15:27:55.200553Z"},{"id":"ALSA-2026:8317","title":"Important: squid:4 security update","description":"Squid is a high-performance proxy caching server for web clients, supporting FTP, and HTTP data objects.  \n\nSecurity Fix(es):  \n\n  * squid: Squid: Denial of Service via heap Use-After-Free vulnerability in ICP handling (CVE-2026-33526)\n  * Squid: Squid: Denial of Service via crafted ICP traffic (CVE-2026-32748)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-04-15T00:00:00Z","modified":"2026-10-29T11:02:24.890217548Z","updated_at":"2026-11-02T15:27:55.200553Z"},{"id":"AZL-80768","title":"CVE-2026-32748 affecting package squid for versions less than 6.13-4","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.","status":"published","published":"2026-03-26T01:16:26Z","modified":"2026-11-05T05:40:51Z","updated_at":"2026-11-05T16:41:24.800038Z"},{"id":"CLSA-2026-1774874340","title":"squid: Fix of 3 CVEs","description":"- CVE-2026-33526: fix heap use-after-free due to double rfc1738_escape in ICP error handling\n- CVE-2026-33515: fix validation of ICP packet sizes and URLs to prevent out-of-bounds reads\n- CVE-2026-32748: fix HttpRequest use-after-free in ICP v3 query handling","status":"published","published":"2026-03-30T12:39:04Z","modified":"2026-10-21T10:48:02.82672431Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"CLSA-2026-1774874764","title":"squid: Fix of 3 CVEs","description":"- CVE-2026-33526: fix heap use-after-free due to double rfc1738_escape in ICP error handling\n- CVE-2026-33515: fix validation of ICP packet sizes and URLs to prevent out-of-bounds reads\n- CVE-2026-32748: fix HttpRequest use-after-free in ICP v3 query handling","status":"published","published":"2026-07-22T14:06:26Z","modified":"2026-10-26T09:31:41.115039978Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"CLSA-2026-1774877548","title":"squid: Fix of 3 CVEs","description":"- CVE-2026-33526: fix heap use-after-free due to double rfc1738_escape in ICP error handling\n- CVE-2026-33515: fix validation of ICP packet sizes and URLs to prevent out-of-bounds reads\n- CVE-2026-32748: fix HttpRequest use-after-free in ICP v3 query handling","status":"published","published":"2026-03-30T13:32:32Z","modified":"2026-10-21T10:48:14.268751891Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"CLSA-2026-1774946829","title":"squid: Fix of 3 CVEs","description":"- CVE-2026-33526: fix heap Use-After-Free in ICP traffic handling causing DoS\n- CVE-2026-33515: fix out-of-bounds read in ICP message handling leaking\n  sensitive information\n- CVE-2026-32748: fix HttpRequest lifetime in ICP v3 queries preventing\n  Use-After-Free DoS","status":"published","published":"2026-07-22T14:18:17Z","modified":"2026-10-26T09:31:38.61171396Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"CLSA-2026-1774947465","title":"Fix CVE(s): CVE-2026-32748, CVE-2026-33515, CVE-2026-33526","description":"   * SECURITY UPDATE: Denial of Service in ICP request handling via double\n     rfc1738_escape() call causing heap use-after-free\n     - debian/patches/CVE-2026-33526.patch: Remove redundant rfc1738_escape()\n       call in icpGetRequest()\n     - CVE-2026-33526\n   * SECURITY UPDATE: Denial of Service in ICP v3 query handling via\n     use-after-free of HttpRequest object\n     - debian/patches/CVE-2026-32748.patch: Add proper HTTPMSGLOCK/HTTPMSGUNLOCK\n       to doV3Query() to match doV2Query() locking pattern\n     - CVE-2026-32748\n   * SECURITY UPDATE: Out-of-bounds read in ICP message handling allows\n     information disclosure\n     - debian/patches/CVE-2026-33515.patch: Add icpGetUrl() validation function\n       to check packet bounds and NUL-termination of URLs in ICP messages\n     - CVE-2026-33515","status":"published","published":"2026-03-31T08:57:50Z","modified":"2026-06-04T10:04:15.076549Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"CLSA-2026-1774947708","title":"squid: Fix of 3 CVEs","description":"- CVE-2026-33526: fix heap Use-After-Free in ICP traffic handling causing DoS\n- CVE-2026-33515: fix out-of-bounds read in ICP message handling leaking\n  sensitive information\n- CVE-2026-32748: fix HttpRequest lifetime in ICP v3 queries preventing\n  Use-After-Free DoS","status":"published","published":"2026-03-31T09:01:52Z","modified":"2026-10-21T10:48:17.752307906Z","updated_at":"2026-11-02T15:43:43.621843Z"},{"id":"CLSA-2026-1775040191","title":"squid: Fix of CVE-2026-32748","description":"- CVE-2026-32748: fix HttpRequest lifetime for ICP v3 queries","status":"published","published":"2026-04-01T10:43:15Z","modified":"2026-06-01T00:32:11.991695182Z","updated_at":"2026-11-02T15:43:44.009773Z"},{"id":"CLSA-2026-1775062103","title":"squid34: Fix of 2 CVEs","description":"- CVE-2026-33526: fix heap Use-After-Free in ICP traffic handling causing DoS\n- CVE-2026-32748: fix HttpRequest lifetime in ICP v3 queries preventing\n  Use-After-Free DoS","status":"published","published":"2026-04-01T16:48:28Z","modified":"2026-10-21T10:48:17.788307593Z","updated_at":"2026-11-02T15:43:44.009773Z"},{"id":"CLSA-2026-1775062580","title":"squid34: Fix of 2 CVEs","description":"- CVE-2026-33526: fix heap Use-After-Free in ICP traffic handling causing DoS\n- CVE-2026-32748: fix HttpRequest lifetime in ICP v3 queries preventing\n  Use-After-Free DoS","status":"published","published":"2026-04-09T13:55:04Z","modified":"2026-10-21T10:47:48.944046374Z","updated_at":"2026-11-02T15:43:44.009773Z"},{"id":"CLSA-2026-1775210281","title":"squid: Fix of CVE-2026-32748","description":"- CVE-2026-32748: fix HttpRequest lifetime for ICP v3 queries","status":"published","published":"2026-04-03T09:58:05Z","modified":"2026-06-01T00:32:46.351827571Z","updated_at":"2026-11-02T15:43:44.009773Z"},{"id":"CLSA-2026-1775688811","title":"Fix CVE(s): CVE-2026-32748, CVE-2026-33526","description":"   * SECURITY UPDATE: denial of service via use-after-free in ICP\n     - debian/patches/CVE-2026-33526.patch: remove duplicate\n       rfc1738_escape call in icpGetRequest that invalidated the\n       previously escaped URL pointer\n     - CVE-2026-33526\n   * SECURITY UPDATE: denial of service via use-after-free in ICP\n     request handling\n     - debian/patches/CVE-2026-32748.patch: return HttpRequestPointer\n       and move icpAccessAllowed into icpGetRequest to fix HttpRequest\n       lifetime for ICP v3 queries\n     - CVE-2026-32748","status":"published","published":"2026-04-08T22:53:40Z","modified":"2026-06-04T10:03:49.645724Z","updated_at":"2026-11-02T15:43:44.009773Z"},{"id":"CLSA-2026-1775724625","title":"Fix CVE(s): CVE-2026-32748, CVE-2026-33526","description":"   * SECURITY UPDATE: denial of service via use-after-free in ICP\n     - debian/patches/CVE-2026-33526.patch: remove duplicate\n       rfc1738_escape call in icpGetRequest that invalidated the\n       previously escaped URL pointer\n     - CVE-2026-33526\n   * SECURITY UPDATE: denial of service via use-after-free in ICP\n     request handling\n     - debian/patches/CVE-2026-32748.patch: return HttpRequestPointer\n       and move icpAccessAllowed into icpGetRequest to fix HttpRequest\n       lifetime for ICP v3 queries\n     - CVE-2026-32748","status":"published","published":"2026-04-09T08:50:29Z","modified":"2026-06-04T10:03:14.885897Z","updated_at":"2026-11-02T15:43:44.009773Z"},{"id":"CLSA-2026-1775734284","title":"Fix CVE(s): CVE-2026-32748, CVE-2026-33526","description":"   * SECURITY UPDATE: denial of service via use-after-free in ICP\n     - debian/patches/CVE-2026-33526.patch: remove duplicate\n       rfc1738_escape call in icpGetRequest that invalidated the\n       previously escaped URL pointer\n     - CVE-2026-33526\n   * SECURITY UPDATE: denial of service via use-after-free in ICP\n     request handling\n     - debian/patches/CVE-2026-32748.patch: return HttpRequestPointer\n       and move icpAccessAllowed into icpGetRequest to fix HttpRequest\n       lifetime for ICP v3 queries\n     - CVE-2026-32748","status":"published","published":"2026-04-09T11:31:29Z","modified":"2026-06-04T10:04:02.781489Z","updated_at":"2026-11-02T15:43:44.009773Z"},{"id":"CLSA-2026-1776173582","title":"squid: Fix of 3 CVEs","description":"- CVE-2026-32748: ICP: fix HttpRequest lifetime for ICP v3 queries\n- CVE-2026-33515: ICP: fix validation of packet sizes and URLs\n- CVE-2026-33526: do not escape malformed URI twice when sending ICP\n  errors","status":"published","published":"2026-04-15T23:27:52Z","modified":"2026-06-01T00:33:14.530483924Z","updated_at":"2026-11-02T15:43:44.009773Z"},{"id":"CLSA-2026-1776174115","title":"squid: Fix of 3 CVEs","description":"- CVE-2026-32748: ICP: fix HttpRequest lifetime for ICP v3 queries\n- CVE-2026-33515: ICP: fix validation of packet sizes and URLs\n- CVE-2026-33526: do not escape malformed URI twice when sending ICP\n  errors","status":"published","published":"2026-04-14T13:42:00Z","modified":"2026-06-01T00:33:23.477580722Z","updated_at":"2026-11-02T15:43:44.009773Z"},{"id":"CLSA-2026-1776174481","title":"squid: Fix of 3 CVEs","description":"- CVE-2026-32748: ICP: fix HttpRequest lifetime for ICP v3 queries\n- CVE-2026-33515: ICP: fix validation of packet sizes and URLs\n- CVE-2026-33526: do not escape malformed URI twice when sending ICP\n  errors","status":"published","published":"2026-04-14T13:48:06Z","modified":"2026-06-01T00:33:21.56054689Z","updated_at":"2026-11-02T15:43:44.009773Z"},{"id":"MGASA-2026-0094","title":"Updated squid packages fix security vulnerabilities","description":"Squid mishandles ASN.1 encoding of long SNMP OIDs. This occurs in\nasn_build_objid in lib/snmplib/asn1.c. (CVE-2025-59362)\nSquid vulnerable to information disclosure via authentication credential\nleakage in error handling. (CVE-2025-62168)\nSquid vulnerable to Denial of Service in ICP Request handling.\n(CVE-2026-33526)\nSquid has Denial of Service in ICP Response handling. (CVE-2026-32748)\nSquid has issues in ICP message handling. (CVE-2026-33515)\n","status":"published","published":"2026-04-12T05:23:15Z","modified":"2026-04-16T04:42:49.716325301Z","updated_at":"2026-11-02T15:49:43.178336Z"},{"id":"openSUSE-SU-2026:22080-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\n- CVE-2026-32748: denial of service in ICP Request handling (bsc#1260453).\n- CVE-2026-33515: out of bounds read in ICP message handling (bsc#1260454).\n- CVE-2026-33526: denial of service in ICP Request handling (bsc#1260452).\n- CVE-2026-47729: out-of-bounds read attack against the ftp gateway due to a improper validation of syntactic\n  correctness of input (bsc#1268272).\n- CVE-2026-50012: Improper Input Validation bug (bsc#1268320).\n\nChanges for squid:\n\nUpdate to 6.14:\n\n  - Do not leak HttpReply when checking http_reply_access (bsc#1237027)\n","status":"published","published":"2026-10-09T13:28:23Z","modified":"2026-10-19T17:23:12.683793511Z","updated_at":"2026-11-02T16:58:42.426393Z"},{"id":"SUSE-SU-2026:24224-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\n- CVE-2026-32748: denial of service in ICP Request handling (bsc#1260453).\n- CVE-2026-33515: out of bounds read in ICP message handling (bsc#1260454).\n- CVE-2026-33526: denial of service in ICP Request handling (bsc#1260452).\n- CVE-2026-47729: out-of-bounds read attack against the ftp gateway due to a improper validation of syntactic\n  correctness of input (bsc#1268272).\n- CVE-2026-50012: Improper Input Validation bug (bsc#1268320).\n\nChanges for squid:\n\nUpdate to 6.14:\n\n  - Do not leak HttpReply when checking http_reply_access (bsc#1237027)\n","status":"published","published":"2026-10-09T13:23:26Z","modified":"2026-10-21T17:23:11.047318494Z","updated_at":"2026-11-02T15:54:04.519245Z"},{"id":"SUSE-SU-2026:4621-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\n- CVE-2026-32748: denial of service in ICP Request handling (bsc#1260453).\n- CVE-2026-33515: out of bounds read in ICP message handling (bsc#1260454).\n- CVE-2026-33526: denial of service in ICP Request handling (bsc#1260452).\n- CVE-2026-47729: out-of-bounds read attack against the ftp gateway due to a improper validation of syntactic\n  correctness of input (bsc#1268272).\n- CVE-2026-50012: Improper Input Validation bug (bsc#1268320).\n\nChanges for squid:\n  \n- Do not leak HttpReply when checking http_reply_access (bsc#1237027)\n- Updated to version 6.14\n","status":"published","published":"2026-10-12T07:24:06Z","modified":"2026-10-13T10:30:05.841997267Z","updated_at":"2026-11-02T15:54:05.838224Z"},{"id":"SUSE-SU-2026:4909-1","title":"Security update for squid","description":"This update for squid fixes the following issues:\n\n- CVE-2023-5824: Multiple issues in HTTP response caching (bsc#1216496).\n- CVE-2023-49288: Use-After-Free in the HTTP Collapsed Forwarding Feature (bsc#1217825).\n- CVE-2025-62168: failure to redact HTTP authentication credentials in error handling leads to the disclosure of\n  credentials a trusted client uses to authenticate (bsc#1252281).\n- CVE-2026-32748: denial of service in ICP Request handling (bsc#1260453).\n- CVE-2026-33515: out of bounds read in ICP message handling (bsc#1260454).\n- CVE-2026-33526: denial of service in ICP Request handling (bsc#1260452).\n- CVE-2026-47729: out-of-bounds read attack against the ftp gateway due to a improper validation of syntactic\n  correctness of input (bsc#1268272).\n- CVE-2026-50012: Improper Input Validation bug (bsc#1268320).\n","status":"published","published":"2026-10-26T07:22:12Z","modified":"2026-10-26T20:15:05.607759754Z","updated_at":"2026-11-02T15:54:05.838224Z"},{"id":"USN-8157-1","title":"squid vulnerabilities","description":"It was discovered that Squid incorrectly handled certain ICP traffic. In\nenvironments where ICP support is enabled, a remote attacker could use this\nissue to cause Squid to crash, resulting in a denial of service, or obtain\nsmall amounts of sensitive information.","status":"published","published":"2026-04-08T12:37:53Z","modified":"2026-06-30T18:15:43.422024435Z","updated_at":"2026-11-02T16:58:22.951676Z"},{"id":"USN-8941-1","title":"squid, squid3 vulnerabilities","description":"It was discovered that Squid incorrectly handled certain HTTP Transfer-\nEncoding headers. An attacker could possibly use this issue to perform HTTP\nrequest smuggling attacks, bypass security mechanisms, or poison web\ncaches.  (CVE-2026-61642)\n\nIt was discovered that Squid incorrectly handled certain cache digest\nreplies, which could lead to a buffer overflow. A remote attacker could\npossibly use this issue to cause Squid to crash, resulting in a denial of\nservice. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and\nUbuntu 20.04 LTS. (CVE-2026-50012)\n\nIt was discovered that Squid incorrectly handled parsing certain FTP\ndirectory listings. A remote attacker could possibly use this issue to\nobtain sensitive information. This issue only affected Ubuntu 16.04 LTS,\nUbuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2026-47729)\n\nIt was discovered that Squid incorrectly handled certain ICP traffic. A\nremote attacker could possibly use this issue to cause Squid to crash,\nresulting in a denial of service. This issue only affected Ubuntu 16.04\nLTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. (CVE-2026-32748,\nCVE-2026-33526)\n\nIt was discovered that Squid incorrectly handled certain ICP requests. A\nremote attacker could possibly use this issue to obtain sensitive\ninformation. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS,\nand Ubuntu 20.04 LTS. (CVE-2026-33515)","status":"published","published":"2026-10-20T13:59:52Z","modified":"2026-10-21T23:11:56.281723379Z","updated_at":"2026-11-02T16:58:26.907654Z"}]}}