ext/wddx/wddx.c in PHP before 5.6.25 and 7.x before 7.0.10 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) or possibly have unspecified other impact via an invalid wddxPacket XML document that is mishandled in a wddx_deserialize call, as demonstrated by a stray element inside a boolean element, leading to incorrect pop processing.
openwall.com/lists/oss-security/2016/09/02/9
rhn.redhat.com/errata/RHSA-2016-2750.html
www.php.net/ChangeLog-5.php
www.php.net/ChangeLog-7.php
www.securityfocus.com/bid/92767
www.securitytracker.com/id/1036680
bugs.php.net/bug.php?id=72799
github.com/php/php-src/commit/0c8a2a2cd1056b7dc403eacb5d2c0eec6ce47c6f
github.com/php/php-src/commit/a14fdb9746262549bbbb96abb87338bacd147e1b?w=1
security.gentoo.org/glsa/201611-22
www.tenable.com/security/tns-2016-19