{"id":"CVE-2019-19916","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-19916","generatedAt":"2026-10-28T00:30:43.226Z","title":"This could result in script running where CSP should have blocked it, allowing for cross-site scripting (XSS) and other attacks when the product renders the content as HTML.","description":"In Midori Browser 0.5.11 (on Windows 10), Content Security Policy (CSP) is not applied correctly to all parts of multipart content sent with the multipart/x-mixed-replace MIME type. This could result in script running where CSP should have blocked it, allowing for cross-site scripting (XSS) and other attacks when the product renders the content as HTML. Remediating this would also need to consider the polyglot case, e.g., a file that is a valid GIF image and also valid JavaScript.","published":"2019-12-20T16:15:12.000Z","lastModified":"2026-06-17T02:27:27.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":6.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":["midori-browser/midori"],"epss":{"score":0.0157,"percentile":0.75196,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.57%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://blog.mozilla.org/security/2016/08/26/mitigating-mime-confusion-attacks-in-firefox/","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/V1n1v131r4/MIME-Confusion-Attack-on-Midori-Browser/blob/master/README.md","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://portswigger.net/research/bypassing-csp-using-polyglot-jpegs","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://blog.mozilla.org/security/2016/08/26/mitigating-mime-confusion-attacks-in-firefox/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/V1n1v131r4/MIME-Confusion-Attack-on-Midori-Browser/blob/master/README.md","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://portswigger.net/research/bypassing-csp-using-polyglot-jpegs","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-19916","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}