{"cve":"CVE-2012-3556","nvd":{"published":"2012-06-14T19:55:00.953","modified":"2026-06-16T23:43:27.933","status":"Modified","description":"Opera before 11.65 does not properly restrict the opening of a pop-up window in response to the first click of a double-click action, which makes it easier for user-assisted remote attackers to conduct cross-site scripting (XSS) attacks or execute arbitrary code via a crafted web site.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-20"],"references":["http://www.opera.com/docs/changelogs/mac/1165/","http://www.opera.com/docs/changelogs/mac/1200/","http://www.opera.com/docs/changelogs/unix/1200/","http://www.opera.com/docs/changelogs/windows/1200/","http://www.opera.com/support/kb/view/1020/"],"products":["opera:opera_browser"],"source":"nvd","synced_at":"2026-10-19T20:24:00.973572543+00:00"},"epss":{"cve":"CVE-2012-3556","score":0.03659,"percentile":0.89627,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}