{"id":"CVE-2011-2635","aliases":["EUVD-2011-2618","GHSA-c959-gc22-qqrh"],"status":"published","title":"The Cascading Style Sheets (CSS) implementation in Opera before 11.10 allows remote attackers to...","description":"The Cascading Style Sheets (CSS) implementation in Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via vectors involving use of the :hover pseudo-class, in conjunction with transforms, for a floated element.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02277,"percentile":0.83228,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-399"],"published":"2011-07-01T10:00:00Z","modified":"2026-06-16T23:31:41Z","products":[{"vendor":"opera","product":"opera_browser"}],"references":[{"url":"http://www.opera.com/docs/changelogs/windows/1110/","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.opera.com/docs/changelogs/mac/1110/","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"http://www.opera.com/docs/changelogs/unix/1110/","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-2635"},{"url":"http://www.opera.com/docs/changelogs/mac/1110"},{"url":"http://www.opera.com/docs/changelogs/unix/1110"},{"url":"http://www.opera.com/docs/changelogs/windows/1110"},{"url":"https://github.com/advisories/GHSA-c959-gc22-qqrh"}],"sources":{"cve":[{"id":"CVE-2011-2635","description":"The Cascading Style Sheets (CSS) implementation in Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via vectors involving use of the :hover pseudo-class, in conjunction with transforms, for a floated element.","status":"published","published":"2011-07-01T10:00:00Z","modified":"2024-09-17T00:36:26.969Z","updated_at":"2026-11-02T14:35:36.603688Z"}],"euvd":[{"id":"EUVD-2011-2618","description":"The Cascading Style Sheets (CSS) implementation in Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via vectors involving use of the :hover pseudo-class, in conjunction with transforms, for a floated element.","status":"published","published":"2011-07-01T10:00:00Z","modified":"2024-09-17T00:36:26Z","updated_at":"2026-11-03T00:28:57.378482Z"}],"ghsa":[{"id":"GHSA-c959-gc22-qqrh","title":"The Cascading Style Sheets (CSS) implementation in Opera before 11.10 allows remote attackers to...","description":"The Cascading Style Sheets (CSS) implementation in Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via vectors involving use of the :hover pseudo-class, in conjunction with transforms, for a floated element.","status":"published","published":"2022-05-17T05:40:42Z","modified":"2025-04-11T03:49:27Z","updated_at":"2026-11-02T15:01:09.113063Z"}],"nvd":[{"id":"CVE-2011-2635","description":"The Cascading Style Sheets (CSS) implementation in Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via vectors involving use of the :hover pseudo-class, in conjunction with transforms, for a floated element.","status":"published","published":"2011-07-01T10:55:03.3Z","modified":"2026-06-16T23:31:41.957Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-399"],"updated_at":"2026-11-02T14:02:09.182398Z"}]}}