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Mozilla Firefox before 19.0, Firefox ESR 17.x before 17.0.3, Thunderbird before 17.0.3, Thunderbird ESR 17.x before 17.0.3, and SeaMonkey before 2.16 allow man-in-the-middle attackers to spoof the address bar by operating a proxy server that provides a 407 HTTP status code accompanied by web script, as demonstrated by a phishing attack on an HTTPS site.
February 19, 2013
April 29, 2026
See which npm, PyPI, Go, and Maven packages are affected by CVE-2013-0776
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.