Epiphany 2.28 and 2.29, when WebKit and LibSoup are used, unconditionally displays a closed-lock icon for any URL beginning with the https: substring, without any warning to the user, which allows man-in-the-middle attackers to spoof arbitrary https web sites via a crafted X.509 server certificate.
https://bugzilla.gnome.org/show_bug.cgi?id=600663
http://www.vupen.com/english/advisories/2011/0212
http://www.openwall.com/lists/oss-security/2010/09/21/5
http://www.openwall.com/lists/oss-security/2010/09/20/2
http://www.openwall.com/lists/oss-security/2010/09/17/6
http://www.openwall.com/lists/oss-security/2010/09/17/5
http://www.openwall.com/lists/oss-security/2010/09/17/13
http://www.openwall.com/lists/oss-security/2010/09/17/12
http://www.openwall.com/lists/oss-security/2010/09/17/10
http://secunia.com/advisories/43068
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00000.html
http://bugzilla-attachments.gnome.org/attachment.cgi?id=154330