High
Security advisory
Integer overflow in the php_html_entities 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 the htmlspecialchars function.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-5094
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:09 UTC · Revision 1
Source evidence
Integer overflow in the php_html_entities 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 the htmlspecialchars function.
osv:CVE-2016-5094
Complete source record
{
"id": "a8daa07f115df85e5ffcf7f5be03933b1ec32378ec26f80e52bfe4bfcbf8954e",
"url": "https://osv.dev/vulnerability/CVE-2016-5094",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-5094",
"summary": "Integer overflow in the php_html_entities 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 the htmlspecialchars function.",
"evidence": "osv:CVE-2016-5094",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2016-5094",
"aliases": [
"CVE-2016-5094"
],
"metrics": [
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"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H"
}
],
"affected": [
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{
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{
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{
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{
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{
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{
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{
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{
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"range": [
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{
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],
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{
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{
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{
"cpe": "cpe:2.3:a:php:php:5.6.13:*:*:*:*:*:*:*",
"range": [
{
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{
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}
],
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{
"cpe": "cpe:2.3:a:php:php:5.6.14:*:*:*:*:*:*:*",
"range": [
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{
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}
],
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},
{
"cpe": "cpe:2.3:a:php:php:5.6.15:*:*:*:*:*:*:*",
"range": [
{
"introduced": "5.6.15"
},
{
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],
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},
{
"cpe": "cpe:2.3:a:php:php:5.6.16:*:*:*:*:*:*:*",
"range": [
{
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},
{
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{
"cpe": "cpe:2.3:a:php:php:5.6.17:*:*:*:*:*:*:*",
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{
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],
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{
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"versions": [
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"5.6.0-alpha3",
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],
"database_specific": {
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"vanir_signatures": [
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"id": "CVE-2016-5094-5809e819",
"digest": {
"length": 454,
"function_hash": "325493177230904307574911245959988028311"
},
"source": "https://github.com/php/php-src/commit/0da8b8b801f9276359262f1ef8274c7812d3dfda",
"target": {
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"function": "php_html_entities"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-20T13:14:19Z"
}
}
],
"modified": "2026-10-20T13:14:19.324027925Z",
"provider": "osv",
"references": [
"https://bugs.php.net/bug.php?id=72135",
"https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731",
"https://github.com/php/php-src/commit/0da8b8b801f9276359262f1ef8274c7812d3dfda?w=1"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
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],
"vendor_product": "php:php",
"extracted_events": [
{
"range": [
{
"introduced": "5.6.0-alpha4"
},
{
"last_affected": "5.6.0-alpha4"
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{
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},
{
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],
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]
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]
}
},
"related_cves": [
{
"value": "CVE-2016-5094",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 387362,
"published_at": "2016-08-07T10:59:07.397+00:00"
}