{"id":"CVE-2020-27748","aliases":["AZL-37062","AZL-7424","CLSA-2025-1751913634","DEBIAN-CVE-2020-27748","EUVD-2020-20252","GHSA-3c8x-jg6w-85xx","MGASA-2020-0446","OESA-2021-1228","ROOT-OS-DEBIAN-12-CVE-2020-27748","UBUNTU-CVE-2020-27748","USN-4649-1"],"status":"published","title":"A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling...","description":"A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01436,"percentile":0.73348,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-201"],"published":"2020-11-24T00:00:00Z","modified":"2026-11-05T05:36:30Z","fixes":[{"ecosystem":"Mageia:7","package":"xdg-utils","fixed_in":["1.1.3-3.1.mga7"],"sources":["osv"]},{"ecosystem":"openEuler:20.03-LTS-SP1","package":"xdg-utils","fixed_in":["1.1.3-5.oe1"],"sources":["osv"]},{"ecosystem":"Root:Debian:12","package":"xdg-utils","fixed_in":["1.1.3-4.1.aikido.12","1.1.3-4.1.root.io.4","1.1.3-4.1.root.io.5","1.1.3-4.1.root.io.7","1.1.3-4.1.root.io.8","1.1.3-4.1.root.io.9","1.1.3-4.1.root.io.10","1.1.3-4.1.root.io.2","1.1.3-4.1.root.io.3","1.1.3-4.1.root.io.6","1.1.3-4.1.root.io.11"],"sources":["osv"]},{"ecosystem":"Root:Debian:12","package":"rootio-xdg-utils","fixed_in":["1.1.3-4.1.aikido.12","1.1.3-4.1.root.io.4","1.1.3-4.1.root.io.5","1.1.3-4.1.root.io.7","1.1.3-4.1.root.io.8","1.1.3-4.1.root.io.9","1.1.3-4.1.root.io.10","1.1.3-4.1.root.io.2","1.1.3-4.1.root.io.3","1.1.3-4.1.root.io.6","1.1.3-4.1.root.io.11"],"sources":["osv"]},{"ecosystem":"Ubuntu:16.04:LTS","package":"xdg-utils","fixed_in":["1.1.1-1ubuntu1.16.04.4"],"sources":["osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"xdg-utils","fixed_in":["1.1.2-1ubuntu2.4"],"sources":["osv"]},{"ecosystem":"Ubuntu:20.04:LTS","package":"xdg-utils","fixed_in":["1.1.3-2ubuntu1.20.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.2.1-3"}]}]},{"source":"osv","ecosystem":"Azure Linux:2","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.1.3-7"}]}]},{"source":"osv","ecosystem":"TuxCare:AlmaLinux:9.2","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.3-11.el9.tuxcare.els1"}]}],"bundled":2},{"source":"osv","ecosystem":"Debian:12","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.3-4.1","1.2.1-1","1.2.1-2"]},{"source":"osv","ecosystem":"Debian:13","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.1-2"]},{"source":"osv","ecosystem":"Debian:14","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.1-2"]},{"source":"osv","ecosystem":"Mageia:7","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.3-3.1.mga7"}]}]},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP1","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.3-5.oe1"}]}]},{"source":"osv","ecosystem":"Root:Debian:12","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.3-4.1.aikido.12"},{"fixed":"1.1.3-4.1.root.io.4"},{"fixed":"1.1.3-4.1.root.io.5"},{"fixed":"1.1.3-4.1.root.io.7"},{"fixed":"1.1.3-4.1.root.io.8"},{"fixed":"1.1.3-4.1.root.io.9"},{"fixed":"1.1.3-4.1.root.io.10"},{"fixed":"1.1.3-4.1.root.io.2"},{"fixed":"1.1.3-4.1.root.io.3"},{"fixed":"1.1.3-4.1.root.io.6"},{"fixed":"1.1.3-4.1.root.io.11"}]}]},{"source":"osv","ecosystem":"Root:Debian:12","package":"rootio-xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.3-4.1.aikido.12"},{"fixed":"1.1.3-4.1.root.io.4"},{"fixed":"1.1.3-4.1.root.io.5"},{"fixed":"1.1.3-4.1.root.io.7"},{"fixed":"1.1.3-4.1.root.io.8"},{"fixed":"1.1.3-4.1.root.io.9"},{"fixed":"1.1.3-4.1.root.io.10"},{"fixed":"1.1.3-4.1.root.io.2"},{"fixed":"1.1.3-4.1.root.io.3"},{"fixed":"1.1.3-4.1.root.io.6"},{"fixed":"1.1.3-4.1.root.io.11"}]}]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.0~rc3+git20150907-1ubuntu2","1.1.0~rc3+git20150907-1ubuntu3","1.1.1-1ubuntu1","1.1.1-1ubuntu1.16.04.1","1.1.1-1ubuntu1.16.04.3","1.1.1-1ubuntu1.16.04.4","1.1.1-1ubuntu1.16.04.5"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.1-1ubuntu2","1.1.1-1ubuntu3","1.1.2-1ubuntu1","1.1.2-1ubuntu2","1.1.2-1ubuntu2.2","1.1.2-1ubuntu2.3","1.1.2-1ubuntu2.4","1.1.2-1ubuntu2.5"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.3-1ubuntu2","1.1.3-2ubuntu1","1.1.3-2ubuntu1.20.04.1","1.1.3-2ubuntu1.20.04.2"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.1-1ubuntu1.16.04.4"}]}],"versions":["1.1.0~rc3+git20150907-1ubuntu2","1.1.0~rc3+git20150907-1ubuntu3","1.1.1-1ubuntu1","1.1.1-1ubuntu1.16.04.1","1.1.1-1ubuntu1.16.04.3"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.2-1ubuntu2.4"}]}],"versions":["1.1.1-1ubuntu2","1.1.1-1ubuntu3","1.1.2-1ubuntu1","1.1.2-1ubuntu2","1.1.2-1ubuntu2.2","1.1.2-1ubuntu2.3"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"xdg-utils","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.3-2ubuntu1.20.04.1"}]}],"versions":["1.1.3-1ubuntu2","1.1.3-2ubuntu1"]}],"products":[{"vendor":"freedesktop","product":"xdg-utils"}],"references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1899769","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory","report"]},{"url":"https://gitlab.freedesktop.org/xdg/xdg-utils/-/issues/177","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Vendor Advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-27748","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-3c8x-jg6w-85xx"},{"url":"https://errata.tuxcare.com/els_os/almalinux9.2esu/CLSA-2025-1751913634.html","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-27748","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2020-0446.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=27688","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4649-1","tags":["advisory"]},{"url":"https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1228","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-27748","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-4649-2","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-27748","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-27748","description":"A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird.","status":"published","published":"2021-06-01T13:15:11Z","modified":"2024-08-04T16:18:45.682Z","cwes":["CWE-201"],"updated_at":"2026-11-02T14:35:53.236501Z"}],"euvd":[{"id":"EUVD-2020-20252","description":"A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird.","status":"published","published":"2021-06-01T13:15:11Z","modified":"2024-08-04T16:18:45Z","updated_at":"2026-11-03T03:07:11.950168Z"}],"ghsa":[{"id":"GHSA-3c8x-jg6w-85xx","title":"A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling...","description":"A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird.","status":"published","published":"2022-05-24T19:03:47Z","modified":"2023-01-29T05:07:48Z","cwes":["CWE-201"],"updated_at":"2026-11-02T14:46:11.123221Z"}],"nvd":[{"id":"CVE-2020-27748","description":"A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird.","status":"published","published":"2021-06-01T14:15:08.387Z","modified":"2026-06-17T03:09:34.11Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-201"],"updated_at":"2026-11-02T14:06:43.288951Z"}],"osv":[{"id":"AZL-37062","title":"CVE-2020-27748 affecting package xdg-utils 1.2.1-3","description":"A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird.","status":"published","published":"2021-06-01T14:15:08Z","modified":"2026-11-05T05:36:30Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-05T16:41:19.751978Z"},{"id":"AZL-7424","title":"CVE-2020-27748 affecting package xdg-utils 1.1.3-7","description":"A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird.","status":"published","published":"2021-06-01T14:15:08Z","modified":"2026-04-21T04:38:41.220309Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:28:09.474476Z"},{"id":"CVE-2020-27748","description":"A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird.","status":"published","published":"2021-06-01T14:15:08.387Z","modified":"2026-04-16T04:43:39.446411582Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:16.248747Z"},{"id":"DEBIAN-CVE-2020-27748","description":"A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird.","status":"published","published":"2021-06-01T14:15:08.387Z","modified":"2026-10-26T12:02:41.963538696Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:33.729655Z"},{"id":"OESA-2021-1228","title":"xdg-utils security update","description":"The xdg-utils package is a set of simple scripts that provide basic desktop integration functions for any Free Desktop, such as Linux. The following tools are included in xdg-utils: * xdg-desktop-menu      Install desktop menu items * xdg-desktop-icon      Install icons to the desktop * xdg-icon-resource     Install icon resources * xdg-mime              Query information about file type handling and                         install descriptions for new file types * xdg-open              Open a file or URL in the user\u0026apos;s preferred application * xdg-email             Send mail using the user\u0026apos;s preferred e-mail composer * xdg-screensaver       Control the screensaver\r\n\r\nSecurity Fix(es):\r\n\r\nA flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird.(CVE-2020-27748)","status":"published","published":"2021-06-22T11:04:28Z","modified":"2026-08-18T01:15:44.573058721Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:52:38.987987Z"},{"id":"UBUNTU-CVE-2020-27748","description":"A flaw was found in the xdg-email component of xdg-utils-1.1.0-rc1 and newer. When handling mailto: URIs, xdg-email allows attachments to be discreetly added via the URI when being passed to Thunderbird. An attacker could potentially send a victim a URI that automatically attaches a sensitive file to a new email. If a victim user does not notice that an attachment was added and sends the email, this could result in sensitive information disclosure. It has been confirmed that the code behind this issue is in xdg-email and not in Thunderbird.","status":"published","published":"2020-11-24T00:00:00Z","modified":"2026-02-04T04:15:07.04289Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:24.541803Z"},{"id":"CLSA-2025-1751913634","title":"xdg-utils: Fix of 2 CVEs","description":"- xdg-email: disable special support for Thunderbird\n  to address following vulnerabilities:\n- CVE-2020-27748: local file inclusion vulnerability\n- CVE-2022-4055: improper parse of mailto URIs allows bypass\n  of Thunderbird security mechanism for attachments","status":"published","published":"2025-07-07T18:40:39Z","modified":"2026-06-01T00:31:07.917748068Z","updated_at":"2026-11-02T15:43:41.66212Z"},{"id":"MGASA-2020-0446","title":"Updated xdg-utils package fixes a security vulnerability","description":"Jens Mueller discovered that xdg-utils incorrectly handled certain URI. An\nattacker could possibly use this issue to expose sensitive information\n(CVE-2020-27748).\n","status":"published","published":"2020-12-03T09:54:38Z","modified":"2026-04-16T04:42:40.615197142Z","updated_at":"2026-11-02T15:49:41.509337Z"},{"id":"ROOT-OS-DEBIAN-12-CVE-2020-27748","title":"CVE-2020-27748 in xdg-utils - Patched by Root","description":"Root has patched CVE-2020-27748 in the xdg-utils package for Root:Debian:12. Multiple fixed versions available.","status":"published","published":"2026-08-26T07:22:07Z","modified":"2026-08-26T09:00:11.9896574Z","updated_at":"2026-11-02T15:53:30.70924Z"},{"id":"USN-4649-1","title":"xdg-utils vulnerability","description":"Jens Mueller discovered that xdg-utils incorrectly handled certain URI.\nAn attacker could possibly use this issue to expose sensitive information.\n","status":"published","published":"2020-11-26T13:57:13Z","modified":"2026-02-10T04:41:59Z","updated_at":"2026-11-02T16:58:15.159055Z"}]}}