Critical
Security advisory
php_zip.c in the zip extension in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and application crash) via crafted serialized data containing a ZipArchive object.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-5773
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:10 UTC · Revision 1
Source evidence
php_zip.c in the zip extension in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and application crash) via crafted serialized data containing a ZipArchive object.
osv:CVE-2016-5773
Complete source record
{
"id": "cd911732884ff389447ae3a3df9009c782a4266d0425e810f1b3ee4d2c0f7fa7",
"url": "https://osv.dev/vulnerability/CVE-2016-5773",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-5773",
"summary": "php_zip.c in the zip extension in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8 improperly interacts with the unserialize implementation and garbage collection, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and application crash) via crafted serialized data containing a ZipArchive object.",
"evidence": "osv:CVE-2016-5773",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2016-5773",
"aliases": [
"CVE-2016-5773"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
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"type": "GIT",
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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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{
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{
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{
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},
{
"cpe": "cpe:2.3:a:php:php:5.6.8:*:*:*:*:*:*:*",
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{
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],
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{
"cpe": "cpe:2.3:a:php:php:5.6.9:*:*:*:*:*:*:*",
"range": [
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{
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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:5.6.17:*:*:*:*:*:*:*",
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{
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{
"cpe": "cpe:2.3:a:php:php:5.6.19:*:*:*:*:*:*:*",
"range": [
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{
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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:7.0.6:*:*:*:*:*:*:*",
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],
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{
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],
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{
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],
"source": "REFERENCES_COMMIT"
}
]
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}
],
"versions": [
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"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",
"5.6.22",
"5.6.23",
"5.6.3",
"5.6.4",
"5.6.5",
"5.6.6",
"5.6.7",
"5.6.8",
"5.6.9",
"7.0.0",
"7.0.1",
"7.0.2",
"7.0.3",
"7.0.4",
"7.0.5",
"7.0.6",
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"php-5.5.36",
"php-7.0.7",
"php-7.0.7RC1",
"POST_PHP7_NSAPI_REMOVAL",
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"PRE_PHP7_EREG_MYSQL_REMOVALS",
"PRE_PHP7_REMOVALS",
"POST_PHP7_REMOVALS",
"POST_AST_MERGE",
"PRE_AST_MERGE",
"POST_64BIT_BRANCH_MERGE",
"PRE_64BIT_BRANCH_MERGE",
"POST_PHPNG_MERGE"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-5773.json",
"vanir_signatures": [
{
"id": "CVE-2016-5773-0450c870",
"digest": {
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"line_hashes": [
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"312605460516307546358655968823750311776",
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},
"source": "https://github.com/php/php-src/commit/f6aef68089221c5ea047d4a74224ee3deead99a6",
"target": {
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},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2016-5773-76d74a1e",
"digest": {
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"function_hash": "119329149946522731800414006082504987445"
},
"source": "https://github.com/php/php-src/commit/f6aef68089221c5ea047d4a74224ee3deead99a6",
"target": {
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"function": "PHP_MINIT_FUNCTION"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-20T13:15:25Z"
}
}
],
"modified": "2026-10-20T13:15:25.352138583Z",
"provider": "osv",
"references": [
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"https://support.apple.com/HT207170",
"https://bugs.php.net/bug.php?id=72434"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
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"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"
},
{
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},
{
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}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2016-5773",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 387400,
"published_at": "2016-08-07T10:59:21.65+00:00"
}