{"id":"UBUNTU-CVE-2020-14001","details":"The kramdown gem before 2.3.0 for Ruby processes the template option inside Kramdown documents by default, which allows unintended read access (such as template=\"/etc/passwd\") or unintended embedded Ruby code execution (such as a string that begins with template=\"string://\u003c%= `). NOTE: kramdown is used in Jekyll, GitLab Pages, GitHub Pages, and Thredded Forum.","modified":"2026-01-30T01:35:35.997358Z","published":"2020-07-17T16:15:00Z","related":["USN-4562-1","USN-4562-2"],"upstream":["CVE-2020-14001"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-14001"},{"type":"REPORT","url":"https://github.com/gettalong/kramdown/commit/1b8fd33c3120bfc6e5164b449e2c2fc9c9306fde"},{"type":"REPORT","url":"https://github.com/gettalong/kramdown"},{"type":"REPORT","url":"https://github.com/gettalong/kramdown/compare/REL_2_2_1...REL_2_3_0"},{"type":"REPORT","url":"https://kramdown.gettalong.org"},{"type":"REPORT","url":"https://kramdown.gettalong.org/news.html"},{"type":"REPORT","url":"https://rubygems.org/gems/kramdown"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4562-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4562-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-14001"}],"affected":[{"package":{"name":"ruby-kramdown","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/ruby-kramdown@1.10.0-1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.8.0-1","1.10.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-kramdown","binary_version":"1.10.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-14001.json"}},{"package":{"name":"ruby-kramdown","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/ruby-kramdown@1.15.0-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.14.0-1","1.15.0-1"],"ecosystem_specific":{"binaries":[{"binary_name":"ruby-kramdown","binary_version":"1.15.0-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-14001.json"}},{"package":{"name":"ruby-kramdown","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/ruby-kramdown@1.17.0-4ubuntu0.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.17.0-4ubuntu0.1"}]}],"versions":["1.17.0-1","1.17.0-2","1.17.0-4"],"ecosystem_specific":{"binaries":[{"binary_name":"kramdown","binary_version":"1.17.0-4ubuntu0.1"},{"binary_name":"ruby-kramdown","binary_version":"1.17.0-4ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-14001.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}