CVE-2015-8866

CriticalCVSS 9.6/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 9.6/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-611

Affected software

VendorProductVersions
n/an/an/a

References

Timeline

Published
May 22, 2016
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2015

CVE-2015-88677.5The openssl_random_pseudo_bytes function in ext/openssl/openssl.c in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x before 5.6.12 incorreCVE-2015-88687.8Heap-based buffer overflow in the ExponentialFunction::ExponentialFunction function in Poppler before 0.40.0 allows remote attackers to causCVE-2015-88699.1OCaml before 4.03.0 does not properly handle sign extensions, which allows remote attackers to conduct buffer overflow attacks or obtain senCVE-2015-88707.4Integer overflow in tools/bmp2tiff.c in LibTIFF before 4.0.4 allows remote attackers to cause a denial of service (heap-based buffer over-reCVE-2015-88719.8Use-after-free vulnerability in the opj_j2k_write_mco function in j2k.c in OpenJPEG before 2.1.1 allows remote attackers to have unspecifiedCVE-2015-88726.2The set_fat function in fat.c in dosfstools before 4.0 might allow attackers to corrupt a FAT12 filesystem or cause a denial of service (invCVE-2015-88737.5Stack consumption vulnerability in Zend/zend_exceptions.c in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x before 5.6.12 allows remote aCVE-2015-88747.5Stack consumption vulnerability in GD in PHP before 5.6.12 allows remote attackers to cause a denial of service via a crafted imagefilltoborCVE-2015-88757.8Multiple integer overflows in the (1) pixops_composite_nearest, (2) pixops_composite_color_nearest, and (3) pixops_process functions in pixoCVE-2015-88769.8Zend/zend_exceptions.c in PHP before 5.4.44, 5.5.x before 5.5.28, and 5.6.x before 5.6.12 does not validate certain Exception objects, whichCVE-2015-88777.5The gdImageScaleTwoPass function in gd_interpolation.c in the GD Graphics Library (aka libgd) before 2.2.0, as used in PHP before 5.6.12, usCVE-2015-88785.9main/php_open_temporary_file.c in PHP before 5.5.28 and 5.6.x before 5.6.12 does not ensure thread safety, which allows remote attackers to
CVE-2015-8866: Critical severity, CVSS 9.6 | Vulnix