{"id":"CVE-2013-1639","aliases":["EUVD-2013-1670","GHSA-jxcx-gjqg-4rgj"],"status":"published","title":"Opera before 12.13 does not send CORS preflight requests in all required cases, which allows...","description":"Opera before 12.13 does not send CORS preflight requests in all required cases, which allows remote attackers to bypass a CSRF protection mechanism via a crafted web site that triggers a CORS request.","severity":{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.00491,"percentile":0.42565,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-352"],"published":"2013-02-08T11:00:00Z","modified":"2026-06-16T23:51:49Z","products":[{"vendor":"opera","product":"opera_browser"}],"references":[{"url":"http://www.opera.com/docs/changelogs/unified/1213/","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://lists.opensuse.org/opensuse-updates/2013-02/msg00038.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred"]},{"url":"http://www.opera.com/support/kb/view/1045/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-1639"},{"url":"http://www.opera.com/docs/changelogs/unified/1213"},{"url":"http://www.opera.com/support/kb/view/1045"},{"url":"https://github.com/advisories/GHSA-jxcx-gjqg-4rgj"}],"sources":{"cve":[{"id":"CVE-2013-1639","description":"Opera before 12.13 does not send CORS preflight requests in all required cases, which allows remote attackers to bypass a CSRF protection mechanism via a crafted web site that triggers a CORS request.","status":"published","published":"2013-02-08T11:00:00Z","modified":"2024-08-06T15:13:31.29Z","updated_at":"2026-11-02T14:34:58.534075Z"}],"euvd":[{"id":"EUVD-2013-1670","description":"Opera before 12.13 does not send CORS preflight requests in all required cases, which allows remote attackers to bypass a CSRF protection mechanism via a crafted web site that triggers a CORS request.","status":"published","published":"2013-02-08T11:00:00Z","modified":"2024-08-06T15:13:31Z","updated_at":"2026-11-03T01:56:41.572158Z"}],"ghsa":[{"id":"GHSA-jxcx-gjqg-4rgj","title":"Opera before 12.13 does not send CORS preflight requests in all required cases, which allows...","description":"Opera before 12.13 does not send CORS preflight requests in all required cases, which allows remote attackers to bypass a CSRF protection mechanism via a crafted web site that triggers a CORS request.","status":"published","published":"2022-05-17T05:14:00Z","modified":"2025-04-11T04:08:18Z","cwes":["CWE-352"],"updated_at":"2026-11-02T15:01:13.040475Z"}],"nvd":[{"id":"CVE-2013-1639","description":"Opera before 12.13 does not send CORS preflight requests in all required cases, which allows remote attackers to bypass a CSRF protection mechanism via a crafted web site that triggers a CORS request.","status":"published","published":"2013-02-08T11:58:22.657Z","modified":"2026-06-16T23:51:49.35Z","cvss":[{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-352"],"updated_at":"2026-11-02T14:02:21.222658Z"}]}}