ext/wddx/wddx.c in PHP before 5.6.28 and 7.x before 7.0.13 allows remote attackers to cause a denial of service (NULL pointer dereference) via crafted serialized data in a wddxPacket XML document, as demonstrated by a PDORow string.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2016-9934.json"