CVE-2015-8866

9.6 CRITICAL
Published: May 22, 2016 Modified: May 06, 2026
View on 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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=de31324c221c1791b26350ba106cc26bad23ace9
Source: cve@mitre.org
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00031.html
Source: cve@mitre.org
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00033.html
Source: cve@mitre.org
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00056.html
Source: cve@mitre.org
Mailing List Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2750.html
Source: cve@mitre.org
Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/04/24/1
Source: cve@mitre.org
Mailing List Patch Third Party Advisory
http://www.php.net/ChangeLog-5.php
Source: cve@mitre.org
Release Notes Vendor Advisory
http://www.securityfocus.com/bid/87470
Source: cve@mitre.org
Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-2952-1
Source: cve@mitre.org
Third Party Advisory
http://www.ubuntu.com/usn/USN-2952-2
Source: cve@mitre.org
Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1509817
Source: cve@mitre.org
Issue Tracking Patch Third Party Advisory
https://bugs.php.net/bug.php?id=64938
Source: cve@mitre.org
Exploit Issue Tracking Patch Vendor Advisory
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=de31324c221c1791b26350ba106cc26bad23ace9
Source: af854a3a-2127-422b-91ae-364da2661108
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00031.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00033.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00056.html
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2016-2750.html
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/04/24/1
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List Patch Third Party Advisory
http://www.php.net/ChangeLog-5.php
Source: af854a3a-2127-422b-91ae-364da2661108
Release Notes Vendor Advisory
http://www.securityfocus.com/bid/87470
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-2952-1
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
http://www.ubuntu.com/usn/USN-2952-2
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/php5/+bug/1509817
Source: af854a3a-2127-422b-91ae-364da2661108
Issue Tracking Patch Third Party Advisory
https://bugs.php.net/bug.php?id=64938
Source: af854a3a-2127-422b-91ae-364da2661108
Exploit Issue Tracking Patch Vendor Advisory

24 reference(s) from NVD

Quick Stats

CVSS v3 Score
9.6 / 10.0
EPSS (Exploit Probability)
3.5%
88th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

CWE-611

Affected Vendors

opensuse php canonical suse

Related CVEs

CVE-2026-6222 5.3
CVE-2026-40003 5.1
CVE-2026-44597 3.7
CVE-2026-6278 N/A
CVE-2026-41484 5.3