CyberRota Analysis
This is a critical severity vulnerability with a CVSS score of 9.6. It may be remotely exploitable.
CVE
CVE-2015-8866
Severity
CRITICAL
CVSS
9.6
EPSS
4.03%
Original NVD Description
ext/libxml/libxml.c in PHP before 5.5.22 and 5.6.x before 5.6.6, when PHP-FPM is used, does not isolate each thread from libxml_disable_entity_loader changes in other threads, which allows remote attackers to conduct XML External Entity (XXE) and XML Entity Expansion (XEE) attacks via a crafted XML document, a related issue to CVE-2015-5161.