{"id":"CVE-2011-4681","aliases":["EUVD-2011-4599","GHSA-whvm-6666-v8cf"],"status":"published","title":"Opera before 11.60 does not properly consider the number of . (dot) characters that...","description":"Opera before 11.60 does not properly consider the number of . (dot) characters that conventionally exist in domain names of different top-level domains, which allows remote attackers to bypass the Same Origin Policy by leveraging access to a different domain name in the same top-level domain, as demonstrated by the .no or .uk domain.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01978,"percentile":0.80648,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-264"],"published":"2011-12-07T19:00:00Z","modified":"2026-06-16T23:35:13Z","products":[{"vendor":"opera","product":"opera_browser"}],"references":[{"url":"http://www.opera.com/support/kb/view/1003/","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory"]},{"url":"http://www.opera.com/docs/changelogs/mac/1160/","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.opera.com/docs/changelogs/windows/1160/","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.opera.com/docs/changelogs/unix/1160/","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-4681"},{"url":"http://www.opera.com/docs/changelogs/mac/1160"},{"url":"http://www.opera.com/docs/changelogs/unix/1160"},{"url":"http://www.opera.com/docs/changelogs/windows/1160"},{"url":"http://www.opera.com/support/kb/view/1003"},{"url":"https://github.com/advisories/GHSA-whvm-6666-v8cf"}],"sources":{"cve":[{"id":"CVE-2011-4681","description":"Opera before 11.60 does not properly consider the number of . (dot) characters that conventionally exist in domain names of different top-level domains, which allows remote attackers to bypass the Same Origin Policy by leveraging access to a different domain name in the same top-level domain, as demonstrated by the .no or .uk domain.","status":"published","published":"2011-12-07T19:00:00Z","modified":"2024-09-16T17:57:48.77Z","updated_at":"2026-11-02T14:35:37.671707Z"}],"euvd":[{"id":"EUVD-2011-4599","description":"Opera before 11.60 does not properly consider the number of . (dot) characters that conventionally exist in domain names of different top-level domains, which allows remote attackers to bypass the Same Origin Policy by leveraging access to a different domain name in the same top-level domain, as demonstrated by the .no or .uk domain.","status":"published","published":"2011-12-07T19:00:00Z","modified":"2024-09-16T17:57:48Z","updated_at":"2026-11-03T00:55:37.247006Z"}],"ghsa":[{"id":"GHSA-whvm-6666-v8cf","title":"Opera before 11.60 does not properly consider the number of . (dot) characters that...","description":"Opera before 11.60 does not properly consider the number of . (dot) characters that conventionally exist in domain names of different top-level domains, which allows remote attackers to bypass the Same Origin Policy by leveraging access to a different domain name in the same top-level domain, as demonstrated by the .no or .uk domain.","status":"published","published":"2022-05-17T05:32:32Z","modified":"2025-04-11T03:53:14Z","updated_at":"2026-11-02T15:01:09.612717Z"}],"nvd":[{"id":"CVE-2011-4681","description":"Opera before 11.60 does not properly consider the number of . (dot) characters that conventionally exist in domain names of different top-level domains, which allows remote attackers to bypass the Same Origin Policy by leveraging access to a different domain name in the same top-level domain, as demonstrated by the .no or .uk domain.","status":"published","published":"2011-12-07T19:55:02.517Z","modified":"2026-06-16T23:35:13.82Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:02:11.800512Z"}]}}