{"id":"UBUNTU-CVE-2018-7753","details":"An issue was discovered in Bleach 2.1.x before 2.1.3. Attributes that have URI values weren't properly sanitized if the values contained character entities. Using character entities, it was possible to construct a URI value with a scheme that was not allowed that would slide through unsanitized.","modified":"2026-03-10T02:33:38.207351Z","published":"2018-03-07T23:29:00Z","related":["USN-8077-1"],"upstream":["CVE-2018-7753"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-7753"},{"type":"REPORT","url":"https://github.com/mozilla/bleach/pull/356"},{"type":"REPORT","url":"https://github.com/mozilla/bleach/commit/c5df5789ec3471a31311f42c2d19fc2cf21b35ef"},{"type":"REPORT","url":"https://bugs.debian.org/892252"},{"type":"REPORT","url":"https://github.com/mozilla/bleach/releases/tag/v2.1.3"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-7753"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8077-1"}],"affected":[{"package":{"name":"python-bleach","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/python-bleach@2.1.2-1ubuntu0.1~esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.2-1ubuntu0.1~esm1"}]}],"versions":["2.0-1","2.1.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"python-bleach","binary_version":"2.1.2-1ubuntu0.1~esm1"},{"binary_name":"python3-bleach","binary_version":"2.1.2-1ubuntu0.1~esm1"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-7753.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}