VULNERABILITY INTELLIGENCE
CVE-2015-8866
CVSS score9.6 CRITICAL
EPSS probability4.17%
CISA KEVNot currently listed
Published2016-05-22
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
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.
Weakness classification
- CWE-611: Improper Restriction of XML External Entity Reference
Primary references
- cve@mitre.org
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Mailing List, Patch, Third Party Advisory
- cve@mitre.org — Release Notes, Vendor Advisory
- cve@mitre.org — Third Party Advisory, VDB Entry
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Issue Tracking, Patch, Third Party Advisory
- cve@mitre.org — Exploit, Issue Tracking, Patch, Vendor Advisory