{"id":"CVE-2019-19916","state":"PUBLISHED","title":"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","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.","publishedAt":"2019-12-20T15:07:12.000Z","updatedAt":"2024-08-05T02:32:10.084Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://github.com/V1n1v131r4/MIME-Confusion-Attack-on-Midori-Browser/blob/master/README.md","https://blog.mozilla.org/security/2016/08/26/mitigating-mime-confusion-attacks-in-firefox/","https://portswigger.net/research/bypassing-csp-using-polyglot-jpegs"],"weaknesses":[],"ingestedAt":"2026-10-29T19:45:43.853Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2019/19xxx/CVE-2019-19916.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2019-19916","state":"PUBLISHED","datePublished":"2019-12-20T15:07:12.000Z","dateUpdated":"2024-08-05T02:32:10.084Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2019-12-20T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"https://github.com/V1n1v131r4/MIME-Confusion-Attack-on-Midori-Browser/blob/master/README.md","tags":["x_refsource_MISC"]},{"url":"https://blog.mozilla.org/security/2016/08/26/mitigating-mime-confusion-attacks-in-firefox/","tags":["x_refsource_MISC"]},{"url":"https://portswigger.net/research/bypassing-csp-using-polyglot-jpegs","tags":["x_refsource_MISC"]}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"mitre","dateUpdated":"2019-12-20T15:07:12.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2019-19916","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"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."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"https://github.com/V1n1v131r4/MIME-Confusion-Attack-on-Midori-Browser/blob/master/README.md","refsource":"MISC","url":"https://github.com/V1n1v131r4/MIME-Confusion-Attack-on-Midori-Browser/blob/master/README.md"},{"name":"https://blog.mozilla.org/security/2016/08/26/mitigating-mime-confusion-attacks-in-firefox/","refsource":"MISC","url":"https://blog.mozilla.org/security/2016/08/26/mitigating-mime-confusion-attacks-in-firefox/"},{"name":"https://portswigger.net/research/bypassing-csp-using-polyglot-jpegs","refsource":"MISC","url":"https://portswigger.net/research/bypassing-csp-using-polyglot-jpegs"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://github.com/V1n1v131r4/MIME-Confusion-Attack-on-Midori-Browser/blob/master/README.md","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://blog.mozilla.org/security/2016/08/26/mitigating-mime-confusion-attacks-in-firefox/","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://portswigger.net/research/bypassing-csp-using-polyglot-jpegs","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-05T02:32:10.084Z"}}]}}}