{"id":"UBUNTU-CVE-2020-11888","details":"python-markdown2 through 2.3.8 allows XSS because element names are mishandled unless a \\w+ match succeeds. For example, an attack might use elementname@ or elementname- with an onclick attribute.","modified":"2025-10-24T04:48:26Z","published":"2020-04-20T16:15:00Z","upstream":["CVE-2020-11888"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-11888"},{"type":"REPORT","url":"https://github.com/trentm/python-markdown2/issues/348"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-11888"}],"affected":[{"package":{"name":"python-markdown2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/python-markdown2@2.3.7-2?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.7-2"],"ecosystem_specific":{"binaries":[{"binary_name":"python3-markdown2","binary_version":"2.3.7-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-11888.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}