Skip to content
Fencer Intel
high 8.6

CVE-2016-5095 json

Integer overflow in the php_escape_html_entities_ex function in ext/standard/html.c in PHP before 5.5.36 and 5.6.x before 5.6.22 allows rem…

published 2016-08-07 10 y ago modified 2026-06-17 4 mo ago also EUVD-2016-6047

cvss
8.6
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.6%
EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

Integer overflow in the php_escape_html_entities_ex function in ext/standard/html.c in PHP before 5.5.36 and 5.6.x before 5.6.22 allows remote attackers to cause a denial of service or possibly have unspecified other impact by triggering a large output string from a FILTER_SANITIZE_FULL_SPECIAL_CHARS filter_var call. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-5094.

Patch / fix

  • php5 Ubuntu 14.04 LTS 5.5.9+dfsg-1ubuntu4.19

ubuntu advisories UBUNTU-CVE-2016-5095

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • php5 SLE Software Development Kit 12 SP1, SLE Software Development Kit 12, SLE Module for Web and Scripting 12 5.5.14-64.5
  • imap SLED 12 SP1, SLED 12, SLE Workstation Extension 12 SP1 +4 more 2007e_suse-19.1
  • php53 SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +5 more 5.3.17-71.1
  • php53 SLES 11 SP2-LTSS 5.3.17-47.1

suse advisories SUSE-SU-2016:1638-1SUSE-SU-2016:1633-1SUSE-SU-2016:1581-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-5095 updated cvss 5.1

php: Integer overflow in php_filter_full_special_chars

  • Red Hat Software Collections php54-php, php55-php, php54-php-gd, php55-php-gd, rh-php56-php, php54-php-cli, +72 more
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 5 php, php53 Red Hat Enterprise Linux 6 php, php-gd, php-cli, php-dba, php-fpm, php-pdo, +20 more Red Hat Enterprise Linux 7 php, php-gd, php-cli, php-dba, php-fpm, php-pdo, +18 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.64% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 8.6 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-190 Integer Overflow or Wraparound
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.