{"id":"CVE-2020-8866","aliases":["DEBIAN-CVE-2020-8866","DLA-2162-1","EUVD-2020-29708","GHSA-xrh9-pr8p-fpqj","UBUNTU-CVE-2020-8866"],"status":"published","title":"This vulnerability allows remote attackers to create arbitrary files on affected installations of...","description":"This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within add.php. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10125.","severity":{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.09579,"percentile":0.95511,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"cwes":["CWE-434"],"published":"2020-03-23T20:15:17Z","modified":"2026-10-26T12:02:55Z","exploits":[{"source":"exploitdb","id":"EDB-48209","title":"Horde Groupware Webmail Edition 5.2.22 - PHP File Inclusion","type":"webapps","platform":"php","date":"2020-03-11","url":"https://www.exploit-db.com/exploits/48209"},{"source":"exploitdb","id":"EDB-48210","title":"Horde Groupware Webmail Edition 5.2.22 - PHAR Loading","type":"webapps","platform":"php","date":"2020-03-11","url":"https://www.exploit-db.com/exploits/48210"}],"fixes":[{"ecosystem":"Debian:12","package":"php-horde-form","fixed_in":["2.0.20-1"],"sources":["osv"]},{"ecosystem":"Debian:8","package":"php-horde-form","fixed_in":["2.0.8-2+deb8u2"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"php-horde-form","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.20-1"}]}]},{"source":"osv","ecosystem":"Debian:8","package":"php-horde-form","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.0.8-2+deb8u2"}]}],"versions":["2.0.8-2","2.0.8-2+deb8u1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"php-horde-form","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.11-1","2.0.11-2","2.0.12-1","2.0.12-1build1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"php-horde-form","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.18-1"]}],"products":[{"vendor":"debian","product":"debian_linux"},{"vendor":"horde","product":"groupware"},{"vendor":"horde","product":"groupware webmail edition"},{"vendor":"horde","product":"horde_form"}],"references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-275/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry","advisory","report"]},{"url":"https://lists.horde.org/archives/announce/2020/001288.html","tags":["x_refsource_MISC","x_transferred","Mailing List","Vendor Advisory","advisory","report"]},{"url":"https://lists.debian.org/debian-lts-announce/2020/03/msg00036.html","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-8866"},{"url":"https://github.com/advisories/GHSA-xrh9-pr8p-fpqj"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-8866","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-8866","tags":["report"]},{"url":"https://github.com/horde/Form/commit/813f8e7e9479fad4546b89c569325ee9eef60b0f","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-8866","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-8866","description":"This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within add.php. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10125.","status":"published","published":"2020-03-23T20:15:17Z","modified":"2024-08-04T10:12:10.981Z","cvss":[{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:35:50.545879Z"}],"euvd":[{"id":"EUVD-2020-29708","description":"This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within add.php. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10125.","status":"published","published":"2020-03-23T20:15:17Z","modified":"2024-08-04T10:12:10Z","cvss":[{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-03T03:07:56.155078Z"}],"ghsa":[{"id":"GHSA-xrh9-pr8p-fpqj","title":"This vulnerability allows remote attackers to create arbitrary files on affected installations of...","description":"This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within add.php. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10125.","status":"published","published":"2022-05-24T17:12:17Z","modified":"2023-01-28T05:07:39Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:44:33.554453Z"}],"nvd":[{"id":"CVE-2020-8866","description":"This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within add.php. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10125.","status":"published","published":"2020-03-23T21:15:12.643Z","modified":"2026-06-17T03:27:05.693Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:05:56.580228Z"}],"osv":[{"id":"CVE-2020-8866","description":"This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within add.php. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10125.","status":"published","published":"2020-03-23T21:15:12.643Z","modified":"2026-10-24T10:30:34.691110783Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:17.663289Z"},{"id":"DEBIAN-CVE-2020-8866","description":"This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within add.php. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10125.","status":"published","published":"2020-03-23T21:15:12.643Z","modified":"2026-10-26T12:02:55.202374201Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:34.311861Z"},{"id":"UBUNTU-CVE-2020-8866","description":"This vulnerability allows remote attackers to create arbitrary files on affected installations of Horde Groupware Webmail Edition 5.2.22. Authentication is required to exploit this vulnerability. The specific flaw exists within add.php. The issue results from the lack of proper validation of user-supplied data, which can allow the upload of arbitrary files. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the www-data user. Was ZDI-CAN-10125.","status":"published","published":"2020-03-23T21:15:00Z","modified":"2025-10-24T04:48:20Z","cvss":[{"version":"3.0","score":4.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","level":"medium"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:25.728622Z"},{"id":"DLA-2162-1","title":"php-horde-form - security update","status":"published","published":"2020-03-29T00:00:00Z","modified":"2026-03-09T01:18:42.302113Z","updated_at":"2026-11-02T15:46:10.227108Z"}]}}