{"id":"CVE-2018-14028","aliases":["DEBIAN-CVE-2018-14028","EUVD-2018-5958","GHSA-fm2w-6w3p-hhx6","UBUNTU-CVE-2018-14028"],"status":"published","title":"In WordPress 4.9.7, plugins uploaded via the admin area are not verified as being ZIP files. This...","description":"In WordPress 4.9.7, plugins uploaded via the admin area are not verified as being ZIP files. This allows for PHP files to be uploaded. Once a PHP file is uploaded, the plugin extraction fails, but the PHP file remains in a predictable wp-content/uploads location, allowing for an attacker to then execute the file. This represents a security risk in limited scenarios where an attacker (who does have the required capabilities for plugin uploads) cannot simply place arbitrary PHP code into a valid plugin ZIP file and upload that plugin, because a machine's wp-content/plugins directory permissions were set up to block all new plugins.","severity":{"version":"3.0","score":7.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.15167,"percentile":0.96767,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2018-08-10T16:00:00Z","modified":"2026-10-24T10:30:36Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.1.1+dfsg1-1","6.1.6+dfsg1-0+deb12u1","6.1.9+dfsg1-0+deb12u1","6.2+dfsg1-1","6.2.1+dfsg1-1","6.2.2+dfsg1-1","6.3+dfsg1-1","6.3.1+dfsg1-1","6.3.2+dfsg1-1","6.4.1+dfsg1-1","6.4.1+dfsg1-1.1","6.4.2+dfsg1-1","6.4.3+dfsg1-1","6.5+dfsg1-1","6.5.2+dfsg1-1","6.5.3+dfsg1-1","6.5.5+dfsg1-1","6.6.1+dfsg1-1","6.7.2+dfsg1-1","6.7.2+dfsg1-1.1","6.8.1+dfsg1-1","6.8.3+dfsg1-1","6.9+dfsg1-1","6.9.4+dfsg1-1","7.0+dfsg1-1","7.0.2+dfsg1-1","7.0.3+dfsg1-1","7.1+dfsg1-1","7.1.1+dfsg1-1","7.1.2+dfsg1-1","7.1.3+dfsg1-1"]},{"source":"osv","ecosystem":"Debian:13","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.1+dfsg1-1","6.8.10+dfsg1-0+deb13u1","6.8.3+dfsg1-0+deb13u1","6.8.3+dfsg1-1","6.8.6+dfsg1-0+deb13u1","6.8.7+dfsg1-0+deb13u1","6.9+dfsg1-1","6.9.4+dfsg1-1","7.0+dfsg1-1","7.0.2+dfsg1-1","7.0.3+dfsg1-1","7.1+dfsg1-1","7.1.1+dfsg1-1","7.1.2+dfsg1-1","7.1.3+dfsg1-1"]},{"source":"osv","ecosystem":"Debian:14","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.8.1+dfsg1-1","6.8.3+dfsg1-1","6.9+dfsg1-1","6.9.4+dfsg1-1","7.0+dfsg1-1","7.0.2+dfsg1-1","7.0.3+dfsg1-1","7.1+dfsg1-1","7.1.1+dfsg1-1","7.1.2+dfsg1-1","7.1.3+dfsg1-1"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3+dfsg-1","4.3.1+dfsg-1","4.4+dfsg-1","4.4.1+dfsg-1","4.4.2+dfsg-1","4.4.2+dfsg-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.2+dfsg-2","4.8.3+dfsg-1","4.9.1+dfsg-1","4.9.2+dfsg-1","4.9.4+dfsg-1","4.9.5+dfsg1-1"]},{"source":"osv","ecosystem":"Ubuntu:20.04:LTS","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.2+dfsg1-1","5.2.4+dfsg1-1","5.3.2+dfsg1-1","5.3.2+dfsg1-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.7.1+dfsg1-2ubuntu1","5.8.1+dfsg1-2ubuntu1","5.8.2+dfsg1-1ubuntu1","5.8.3+dfsg1-1ubuntu1","5.8.3+dfsg1-1ubuntu1.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2+dfsg1-1ubuntu1","6.4.3+dfsg1-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.7.2+dfsg1-1.1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.7.2+dfsg1-1.1ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"wordpress","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.7.2+dfsg1-1.1ubuntu1","6.7.2+dfsg1-1.1ubuntu2"]}],"products":[{"vendor":"wordpress","product":"wordpress"}],"references":[{"url":"https://core.trac.wordpress.org/ticket/44710","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://github.com/rastating/wordpress-exploit-framework/pull/52","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","report"]},{"url":"https://rastating.github.io/unrestricted-file-upload-via-plugin-uploader-in-wordpress/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","report"]},{"url":"http://www.securityfocus.com/bid/105060","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-14028"},{"url":"https://github.com/advisories/GHSA-fm2w-6w3p-hhx6"},{"url":"https://security-tracker.debian.org/tracker/CVE-2018-14028","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2018-14028","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2018-14028","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2018-14028","description":"In WordPress 4.9.7, plugins uploaded via the admin area are not verified as being ZIP files. This allows for PHP files to be uploaded. Once a PHP file is uploaded, the plugin extraction fails, but the PHP file remains in a predictable wp-content/uploads location, allowing for an attacker to then execute the file. This represents a security risk in limited scenarios where an attacker (who does have the required capabilities for plugin uploads) cannot simply place arbitrary PHP code into a valid plugin ZIP file and upload that plugin, because a machine's wp-content/plugins directory permissions were set up to block all new plugins.","status":"published","published":"2018-08-10T16:00:00Z","modified":"2024-08-05T09:21:40.68Z","updated_at":"2026-11-02T14:35:00.589142Z"}],"euvd":[{"id":"EUVD-2018-5958","description":"In WordPress 4.9.7, plugins uploaded via the admin area are not verified as being ZIP files. This allows for PHP files to be uploaded. Once a PHP file is uploaded, the plugin extraction fails, but the PHP file remains in a predictable wp-content/uploads location, allowing for an attacker to then execute the file. This represents a security risk in limited scenarios where an attacker (who does have the required capabilities for plugin uploads) cannot simply place arbitrary PHP code into a valid plugin ZIP file and upload that plugin, because a machine's wp-content/plugins directory permissions were set up to block all new plugins.","status":"published","published":"2018-08-10T16:00:00Z","modified":"2024-08-05T09:21:40Z","updated_at":"2026-11-03T02:39:47.770292Z"}],"ghsa":[{"id":"GHSA-fm2w-6w3p-hhx6","title":"In WordPress 4.9.7, plugins uploaded via the admin area are not verified as being ZIP files. This...","description":"In WordPress 4.9.7, plugins uploaded via the admin area are not verified as being ZIP files. This allows for PHP files to be uploaded. Once a PHP file is uploaded, the plugin extraction fails, but the PHP file remains in a predictable wp-content/uploads location, allowing for an attacker to then execute the file. This represents a security risk in limited scenarios where an attacker (who does have the required capabilities for plugin uploads) cannot simply place arbitrary PHP code into a valid plugin ZIP file and upload that plugin, because a machine's wp-content/plugins directory permissions were set up to block all new plugins.","status":"published","published":"2022-05-14T02:45:31Z","modified":"2023-02-02T05:06:51Z","cvss":[{"version":"3.0","score":7.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:52:22.708662Z"}],"nvd":[{"id":"CVE-2018-14028","description":"In WordPress 4.9.7, plugins uploaded via the admin area are not verified as being ZIP files. This allows for PHP files to be uploaded. Once a PHP file is uploaded, the plugin extraction fails, but the PHP file remains in a predictable wp-content/uploads location, allowing for an attacker to then execute the file. This represents a security risk in limited scenarios where an attacker (who does have the required capabilities for plugin uploads) cannot simply place arbitrary PHP code into a valid plugin ZIP file and upload that plugin, because a machine's wp-content/plugins directory permissions were set up to block all new plugins.","status":"published","published":"2018-08-10T16:29:00.343Z","modified":"2026-06-17T01:40:30.273Z","cvss":[{"version":"3.0","score":7.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.5,"vector":"AV:N/AC:L/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:04:35.310988Z"}],"osv":[{"id":"CVE-2018-14028","description":"In WordPress 4.9.7, plugins uploaded via the admin area are not verified as being ZIP files. This allows for PHP files to be uploaded. Once a PHP file is uploaded, the plugin extraction fails, but the PHP file remains in a predictable wp-content/uploads location, allowing for an attacker to then execute the file. This represents a security risk in limited scenarios where an attacker (who does have the required capabilities for plugin uploads) cannot simply place arbitrary PHP code into a valid plugin ZIP file and upload that plugin, because a machine's wp-content/plugins directory permissions were set up to block all new plugins.","status":"published","published":"2018-08-10T16:29:00.343Z","modified":"2026-10-24T10:30:36.469414801Z","cvss":[{"version":"3.0","score":7.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:08.242347Z"},{"id":"DEBIAN-CVE-2018-14028","description":"In WordPress 4.9.7, plugins uploaded via the admin area are not verified as being ZIP files. This allows for PHP files to be uploaded. Once a PHP file is uploaded, the plugin extraction fails, but the PHP file remains in a predictable wp-content/uploads location, allowing for an attacker to then execute the file. This represents a security risk in limited scenarios where an attacker (who does have the required capabilities for plugin uploads) cannot simply place arbitrary PHP code into a valid plugin ZIP file and upload that plugin, because a machine's wp-content/plugins directory permissions were set up to block all new plugins.","status":"published","published":"2018-08-10T16:29:00.343Z","modified":"2026-10-23T18:02:58.955587515Z","cvss":[{"version":"3.0","score":7.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:30.290351Z"},{"id":"UBUNTU-CVE-2018-14028","description":"In WordPress 4.9.7, plugins uploaded via the admin area are not verified as being ZIP files. This allows for PHP files to be uploaded. Once a PHP file is uploaded, the plugin extraction fails, but the PHP file remains in a predictable wp-content/uploads location, allowing for an attacker to then execute the file. This represents a security risk in limited scenarios where an attacker (who does have the required capabilities for plugin uploads) cannot simply place arbitrary PHP code into a valid plugin ZIP file and upload that plugin, because a machine's wp-content/plugins directory permissions were set up to block all new plugins.","status":"published","published":"2018-08-10T16:29:00Z","modified":"2026-10-17T12:54:34.933916708Z","cvss":[{"version":"3.0","score":7.2,"vector":"CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:17.014176Z"}]}}