High
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-5095
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 04:35 UTC · Revision 1
Source evidence
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.
osv:CVE-2016-5095
Complete source record
{
"id": "678751b8d86ada3eee3de081a7751fc8e6a9333f9127f60bfe15c9aacd3d7344",
"url": "https://osv.dev/vulnerability/CVE-2016-5095",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-5095",
"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.",
"evidence": "osv:CVE-2016-5095",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2016-5095",
"aliases": [
"CVE-2016-5095"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/php/php-src",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "9d10b0109258e8ea797c8977c5932d162d6c6004"
},
{
"introduced": "8648f76bac2f78391a1539253f21d62f53d83022"
},
{
"last_affected": "50a8b9527a2317ba861ad0b660ff981f69941cfd"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "5.5.35"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:alpha1:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-alpha1"
},
{
"last_affected": "5.6.0-alpha1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:alpha2:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-alpha2"
},
{
"last_affected": "5.6.0-alpha2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:alpha3:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-alpha3"
},
{
"last_affected": "5.6.0-alpha3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:beta1:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-beta1"
},
{
"last_affected": "5.6.0-beta1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:beta2:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-beta2"
},
{
"last_affected": "5.6.0-beta2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:beta3:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-beta3"
},
{
"last_affected": "5.6.0-beta3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.0:beta4:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.0-beta4"
},
{
"last_affected": "5.6.0-beta4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.1"
},
{
"last_affected": "5.6.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.2"
},
{
"last_affected": "5.6.2"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.3"
},
{
"last_affected": "5.6.3"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.4:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.4"
},
{
"last_affected": "5.6.4"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.5:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.5"
},
{
"last_affected": "5.6.5"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.6:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.6"
},
{
"last_affected": "5.6.6"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.7:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.7"
},
{
"last_affected": "5.6.7"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.8"
},
{
"last_affected": "5.6.8"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.9"
},
{
"last_affected": "5.6.9"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.10:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.10"
},
{
"last_affected": "5.6.10"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.11:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.11"
},
{
"last_affected": "5.6.11"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.12:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.12"
},
{
"last_affected": "5.6.12"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.13:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.13"
},
{
"last_affected": "5.6.13"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.14:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.14"
},
{
"last_affected": "5.6.14"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.15:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.15"
},
{
"last_affected": "5.6.15"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.16:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.16"
},
{
"last_affected": "5.6.16"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.17:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.17"
},
{
"last_affected": "5.6.17"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.18:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.18"
},
{
"last_affected": "5.6.18"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.19:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.19"
},
{
"last_affected": "5.6.19"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.20:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.20"
},
{
"last_affected": "5.6.20"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:php:php:5.6.21:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.21"
},
{
"last_affected": "5.6.21"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"5.6.0-alpha1",
"5.6.0-alpha2",
"5.6.0-alpha3",
"5.6.0-beta1",
"5.6.0-beta2",
"5.6.0-beta3",
"5.6.0-beta4",
"5.6.1",
"5.6.10",
"5.6.11",
"5.6.12",
"5.6.13",
"5.6.14",
"5.6.15",
"5.6.16",
"5.6.17",
"5.6.18",
"5.6.19",
"5.6.2",
"5.6.20",
"5.6.21",
"5.6.3",
"5.6.4",
"5.6.5",
"5.6.6",
"5.6.7",
"5.6.8",
"5.6.9",
"php-5.6.21",
"php-5.5.35",
"php-5.6.21RC1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-5095.json"
}
}
],
"modified": "2026-10-24T10:30:20.331019486Z",
"provider": "osv",
"references": [
"https://bugs.php.net/bug.php?id=72135",
"https://gist.github.com/8ef775c117d84ff15185953990a28576"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:php:php:5.6.0:alpha4:*:*:*:*:*:*",
"cpe:2.3:a:php:php:5.6.0:alpha5:*:*:*:*:*:*"
],
"vendor_product": "php:php",
"extracted_events": [
{
"range": [
{
"introduced": "5.6.0-alpha4"
},
{
"last_affected": "5.6.0-alpha4"
},
{
"introduced": "5.6.0-alpha5"
},
{
"last_affected": "5.6.0-alpha5"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2016-5095",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 430240,
"published_at": "2016-08-07T10:59:08.46+00:00"
}