{"cve":"CVE-2012-3978","nvd":{"published":"2012-08-29T10:56:41.207","modified":"2026-06-16T23:44:11.297","status":"Modified","description":"The nsLocation::CheckURL function in Mozilla Firefox before 15.0, Firefox ESR 10.x before 10.0.7, Thunderbird before 15.0, Thunderbird ESR 10.x before 10.0.7, and SeaMonkey before 2.12 does not properly follow the security model of the location object, which allows remote attackers to bypass intended content-loading restrictions or possibly have unspecified other impact via vectors involving chrome code.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://lists.opensuse.org/opensuse-security-announce/2012-08/msg00028.html","http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00011.html","http://lists.opensuse.org/opensuse-security-announce/2012-09/msg00014.html","http://rhn.redhat.com/errata/RHSA-2012-1210.html","http://rhn.redhat.com/errata/RHSA-2012-1211.html"],"products":["mozilla:firefox","mozilla:seamonkey","mozilla:thunderbird","mozilla:thunderbird_esr"],"source":"nvd","synced_at":"2026-10-19T20:25:53.526315492+00:00"},"epss":{"cve":"CVE-2012-3978","score":0.02298,"percentile":0.83288,"date":"2026-11-01"},"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."]}