{
  "document": {
    "aggregate_severity": {
      "text": "Moderate"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      },
      {
        "category": "details",
        "text": "CVE-2026-33515: fix validation of packet sizes and URLs in ICP\n- CVE-2026-33526: fix escaping malformed URI twice when sending ICP errors",
        "title": "Details"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
      "namespace": "https://tuxcare.com/"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://cve.tuxcare.com/els/releases/CLSA-2026:1775209032",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1775209032"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/tuxcare9.6esu/advisories/2026/clsa-2026_1775209032.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-04-08T13:09:09Z",
      "generator": {
        "date": "2026-04-08T13:09:09Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1775209032",
      "initial_release_date": "2026-04-03T09:37:38Z",
      "revision_history": [
        {
          "date": "2026-04-03T09:37:38Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-04-08T13:09:09Z",
          "number": "2",
          "summary": "Update document"
        }
      ],
      "status": "final",
      "version": "2"
    },
    "title": "squid: Fix of 2 CVEs"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "AlmaLinux 9.6",
                "product": {
                  "name": "AlmaLinux 9.6",
                  "product_id": "AlmaLinux-9.6",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:almalinux:almalinux:9.6:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "AlmaLinux"
          }
        ],
        "category": "vendor",
        "name": "AlmaLinux OS Foundation"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Rocky Linux 9.6",
                "product": {
                  "name": "Rocky Linux 9.6",
                  "product_id": "Rocky Linux-9.6",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:resf:rocky_linux:9.6:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Rocky Linux"
          }
        ],
        "category": "vendor",
        "name": "Rocky Linux"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64",
                "product": {
                  "name": "squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64",
                  "product_id": "squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/tuxcare/squid@5.5-19.el9_6.1.tuxcare.els3?arch=x86_64&epoch=7"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "x86_64"
          }
        ],
        "category": "vendor",
        "name": "TuxCare"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64 as a component of AlmaLinux 9.6",
          "product_id": "AlmaLinux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64"
        },
        "product_reference": "squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64",
        "relates_to_product_reference": "AlmaLinux-9.6"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64 as a component of Rocky Linux 9.6",
          "product_id": "Rocky Linux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64"
        },
        "product_reference": "squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64",
        "relates_to_product_reference": "Rocky Linux-9.6"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-33526",
      "cwe": {
        "id": "CWE-416",
        "name": "Use After Free"
      },
      "notes": [
        {
          "category": "description",
          "text": "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.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "AlmaLinux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64",
          "Rocky Linux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-33526"
        },
        {
          "category": "external",
          "summary": "https://github.com/squid-cache/squid/commit/8a7d42f9d44befb8fcbbb619505587c8de6a1e91",
          "url": "https://github.com/squid-cache/squid/commit/8a7d42f9d44befb8fcbbb619505587c8de6a1e91"
        },
        {
          "category": "external",
          "summary": "https://github.com/squid-cache/squid/security/advisories/GHSA-hpfx-h48q-gvwg",
          "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-hpfx-h48q-gvwg"
        },
        {
          "category": "external",
          "summary": "http://www.openwall.com/lists/oss-security/2026/03/25/2",
          "url": "http://www.openwall.com/lists/oss-security/2026/03/25/2"
        }
      ],
      "release_date": "2026-03-26T01:16:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-04-03T09:37:15.654981Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1775209032",
          "product_ids": [
            "AlmaLinux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64",
            "Rocky Linux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1775209032"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "AlmaLinux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64",
            "Rocky Linux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    },
    {
      "cve": "CVE-2026-33515",
      "cwe": {
        "id": "CWE-125",
        "name": "Out-of-bounds Read"
      },
      "notes": [
        {
          "category": "description",
          "text": "Squid 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.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "AlmaLinux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64",
          "Rocky Linux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2026-33515"
        },
        {
          "category": "external",
          "summary": "https://github.com/squid-cache/squid/commit/8138e909d2058d4401e0ad49b583afaec912b165",
          "url": "https://github.com/squid-cache/squid/commit/8138e909d2058d4401e0ad49b583afaec912b165"
        },
        {
          "category": "external",
          "summary": "https://github.com/squid-cache/squid/pull/2220",
          "url": "https://github.com/squid-cache/squid/pull/2220"
        },
        {
          "category": "external",
          "summary": "https://github.com/squid-cache/squid/pull/2220#discussion_r2727683637",
          "url": "https://github.com/squid-cache/squid/pull/2220#discussion_r2727683637"
        },
        {
          "category": "external",
          "summary": "https://github.com/squid-cache/squid/security/advisories/GHSA-84p4-hcx7-jj7c",
          "url": "https://github.com/squid-cache/squid/security/advisories/GHSA-84p4-hcx7-jj7c"
        },
        {
          "category": "external",
          "summary": "http://www.openwall.com/lists/oss-security/2026/03/25/4",
          "url": "http://www.openwall.com/lists/oss-security/2026/03/25/4"
        }
      ],
      "release_date": "2026-03-26T01:16:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-04-03T09:37:15.654981Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1775209032",
          "product_ids": [
            "AlmaLinux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64",
            "Rocky Linux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1775209032"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "AlmaLinux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64",
            "Rocky Linux-9.6:squid-7:5.5-19.el9_6.1.tuxcare.els3.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ]
    }
  ]
}