XXE in Php

CVE-2015-8866

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 (X…

Vulnerability class: XXE (XML External Entity)

EPSS: 0.035 (87.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

References

  • USN-2952-1 (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
  • cve@mitre.org (x_refsource_CONFIRM)
  • cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
  • RHSA-2016:2750 (x_refsource_REDHAT, vendor-advisory, Third Party Advisory)
  • USN-2952-2 (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
  • cve@mitre.org (x_refsource_CONFIRM, Release Notes, Vendor Advisory)
  • cve@mitre.org (x_refsource_CONFIRM, Exploit, Patch, Issue Tracking, Vendor Advisory)
  • 87470 (Third Party Advisory, VDB Entry, vdb-entry, x_refsource_BID)
  • openSUSE-SU-2016:1274 (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
  • SUSE-SU-2016:1277 (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)

Frequently asked questions

What is CVE-2015-8866?
CVE-2015-8866 is a critical-severity vulnerability in Php, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 9.6/10. Published 2016-05-22.
How severe is CVE-2015-8866?
Critical severity. CVSS v3 base score is 9.6 out of 10.