{"id":"UBUNTU-CVE-2018-1000773","details":"WordPress version 4.9.8 and earlier contains a CWE-20 Input Validation vulnerability in thumbnail processing that can result in remote code execution due to an incomplete fix for CVE-2017-1000600. This attack appears to be exploitable via thumbnail upload by an authenticated user and may require additional plugins in order to be exploited however this has not been confirmed at this time.","modified":"2026-05-20T16:03:17.555598919Z","published":"2018-09-06T16:29:00Z","upstream":["CVE-2018-1000773"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-1000773"},{"type":"REPORT","url":"https://www.theregister.co.uk/2018/08/20/php_unserialisation_wordpress_vuln/"},{"type":"REPORT","url":"https://youtu.be/GePBmsNJw6Y?t=1763"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-1000773"}],"affected":[{"package":{"name":"wordpress","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/wordpress?arch=source&distro=xenial"},"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"],"ecosystem_specific":{"binaries":[{"binary_name":"wordpress","binary_version":"4.4.2+dfsg-1ubuntu1"},{"binary_name":"wordpress-l10n","binary_version":"4.4.2+dfsg-1ubuntu1"},{"binary_name":"wordpress-theme-twentyfifteen","binary_version":"4.4.2+dfsg-1ubuntu1"},{"binary_name":"wordpress-theme-twentyfourteen","binary_version":"4.4.2+dfsg-1ubuntu1"},{"binary_name":"wordpress-theme-twentysixteen","binary_version":"4.4.2+dfsg-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1000773.json"}},{"package":{"name":"wordpress","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/wordpress?arch=source&distro=bionic"},"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"],"ecosystem_specific":{"binaries":[{"binary_name":"wordpress","binary_version":"4.9.5+dfsg1-1"},{"binary_name":"wordpress-l10n","binary_version":"4.9.5+dfsg1-1"},{"binary_name":"wordpress-theme-twentyfifteen","binary_version":"4.9.5+dfsg1-1"},{"binary_name":"wordpress-theme-twentyseventeen","binary_version":"4.9.5+dfsg1-1"},{"binary_name":"wordpress-theme-twentysixteen","binary_version":"4.9.5+dfsg1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1000773.json"}},{"package":{"name":"wordpress","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/wordpress?arch=source&distro=focal"},"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"],"ecosystem_specific":{"binaries":[{"binary_name":"wordpress","binary_version":"5.3.2+dfsg1-1ubuntu1"},{"binary_name":"wordpress-l10n","binary_version":"5.3.2+dfsg1-1ubuntu1"},{"binary_name":"wordpress-theme-twentynineteen","binary_version":"5.3.2+dfsg1-1ubuntu1"},{"binary_name":"wordpress-theme-twentyseventeen","binary_version":"5.3.2+dfsg1-1ubuntu1"},{"binary_name":"wordpress-theme-twentysixteen","binary_version":"5.3.2+dfsg1-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1000773.json"}},{"package":{"name":"wordpress","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/wordpress?arch=source&distro=jammy"},"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"],"ecosystem_specific":{"binaries":[{"binary_name":"wordpress","binary_version":"5.8.3+dfsg1-1ubuntu1.1"},{"binary_name":"wordpress-l10n","binary_version":"5.8.3+dfsg1-1ubuntu1.1"},{"binary_name":"wordpress-theme-twentynineteen","binary_version":"5.8.3+dfsg1-1ubuntu1.1"},{"binary_name":"wordpress-theme-twentytwenty","binary_version":"5.8.3+dfsg1-1ubuntu1.1"},{"binary_name":"wordpress-theme-twentytwentyone","binary_version":"5.8.3+dfsg1-1ubuntu1.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1000773.json"}},{"package":{"name":"wordpress","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/wordpress?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.2+dfsg1-1ubuntu1","6.4.3+dfsg1-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"wordpress","binary_version":"6.4.3+dfsg1-1ubuntu1"},{"binary_name":"wordpress-l10n","binary_version":"6.4.3+dfsg1-1ubuntu1"},{"binary_name":"wordpress-theme-twentytwentyfour","binary_version":"6.4.3+dfsg1-1ubuntu1"},{"binary_name":"wordpress-theme-twentytwentythree","binary_version":"6.4.3+dfsg1-1ubuntu1"},{"binary_name":"wordpress-theme-twentytwentytwo","binary_version":"6.4.3+dfsg1-1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1000773.json"}},{"package":{"name":"wordpress","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/wordpress?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.7.2+dfsg1-1.1ubuntu1"],"ecosystem_specific":{"binaries"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