{
  "document": {
    "aggregate_severity": {
      "text": "Important"
    },
    "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": "* SECURITY UPDATE: a mailto: URI could silently attach a local file when\n     Thunderbird was the configured handler\n     - debian/patches/CVE-2022-4055.patch: remove the Thunderbird special case\n       (run_thunderbird() and its callers) from scripts/xdg-email.in, so\n       mailto: URIs go to the desktop handler and no URI field is parsed;\n       the --attach option is dropped with it\n     - debian/patches/tests-xdg-email-thunderbird-passthrough.patch: rewrite the\n       autotest case that asserted the removed Thunderbird path so it asserts\n       the fixed behaviour instead\n     - CVE-2022-4055: unquoted subject= and body= in run_thunderbird() let a\n       mailto: URI append a -compose attachment= argument\n     - CVE-2020-27748: the attach= field of a mailto: URI was passed straight\n       through to -compose attachment=",
        "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-2026:1789566857",
        "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1789566857"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/debian11els/advisories/2026/clsa-2026_1789566857.json"
      }
    ],
    "tracking": {
      "current_release_date": "2026-09-16T13:54:50Z",
      "generator": {
        "date": "2026-09-16T13:54:50Z",
        "engine": {
          "name": "pyCSAF"
        }
      },
      "id": "CLSA-2026:1789566857",
      "initial_release_date": "2026-09-16T13:54:50Z",
      "revision_history": [
        {
          "date": "2026-09-16T13:54:50Z",
          "number": "1",
          "summary": "Initial version"
        }
      ],
      "status": "final",
      "version": "1"
    },
    "title": "Fix CVE(s): CVE-2022-4055"
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Debian 11",
                "product": {
                  "name": "Debian 11",
                  "product_id": "Debian-11",
                  "product_identification_helper": {
                    "cpe": "cpe:2.3:o:debian:debian_linux:11:*:*:*:*:*:*:*"
                  }
                }
              }
            ],
            "category": "product_family",
            "name": "Debian"
          }
        ],
        "category": "vendor",
        "name": "Software in the Public Interest, Inc."
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "xdg-utils-0:1.1.3-4.1+tuxcare.els1.all",
                "product": {
                  "name": "xdg-utils-0:1.1.3-4.1+tuxcare.els1.all",
                  "product_id": "xdg-utils-0:1.1.3-4.1+tuxcare.els1.all",
                  "product_identification_helper": {
                    "purl": "pkg:deb/tuxcare/xdg-utils@1.1.3-4.1%2Btuxcare.els1?arch=all"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "all"
          }
        ],
        "category": "vendor",
        "name": "TuxCare"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "xdg-utils-0:1.1.3-4.1+tuxcare.els1.all as a component of Debian 11",
          "product_id": "Debian-11:xdg-utils-0:1.1.3-4.1+tuxcare.els1.all"
        },
        "product_reference": "xdg-utils-0:1.1.3-4.1+tuxcare.els1.all",
        "relates_to_product_reference": "Debian-11"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2022-4055",
      "cwe": {
        "id": "CWE-146",
        "name": "Improper Neutralization of Expression/Command Delimiters"
      },
      "notes": [
        {
          "category": "description",
          "text": "When xdg-mail is configured to use thunderbird for mailto URLs, improper parsing of the URL can lead to additional headers being passed to thunderbird that should not be included per RFC 2368. An attacker can use this method to create a mailto URL that looks safe to users, but will actually attach files when clicked.",
          "title": "Vulnerability description"
        }
      ],
      "product_status": {
        "fixed": [
          "Debian-11:xdg-utils-0:1.1.3-4.1+tuxcare.els1.all"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2022-4055"
        },
        {
          "category": "external",
          "summary": "https://gitlab.freedesktop.org/xdg/xdg-utils/-/issues/205#note_1494267",
          "url": "https://gitlab.freedesktop.org/xdg/xdg-utils/-/issues/205#note_1494267"
        }
      ],
      "release_date": "2022-11-19T00:15:00Z",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-09-16T13:54:19.713843Z",
          "details": "Details on how to apply the fix are available at: https://cve.tuxcare.com/els/releases/CLSA-2026:1789566857",
          "product_ids": [
            "Debian-11:xdg-utils-0:1.1.3-4.1+tuxcare.els1.all"
          ],
          "url": "https://cve.tuxcare.com/els/releases/CLSA-2026:1789566857"
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}