CVE-2016-5095

high

Published 2016-08-07 · Modified 2026-05-06

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CVSS v3

8.6

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

CVSS v4 NEW

—

not yet in upstream

VIR risk

8.6

Description

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.

Predictions

Exploit likelihood

91%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

OS impact

OS	Version	Status	Fixed in
sles		affected

Application impact

Vendor	Product	Versions
php	php	`{"endIncluding":"5.5.35"}`
php	php	`5.6.0`
php	php	`5.6.1`
php	php	`5.6.2`
php	php	`5.6.3`
php	php	`5.6.4`
php	php	`5.6.5`
php	php	`5.6.6`
php	php	`5.6.7`
php	php	`5.6.8`
php	php	`5.6.9`
php	php	`5.6.10`
php	php	`5.6.11`
php	php	`5.6.12`
php	php	`5.6.13`
php	php	`5.6.14`
php	php	`5.6.15`
php	php	`5.6.16`
php	php	`5.6.17`
php	php	`5.6.18`
php	php	`5.6.19`
php	php	`5.6.20`
php	php	`5.6.21`

References

CWEs

CWE-190

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.