Critical
Security advisory
The SplObjectStorage unserialize implementation in ext/spl/spl_observer.c in PHP before 7.0.12 does not verify that a key is an object, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized memory access) via crafted serialized data.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-7480
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:10 UTC · Revision 1
Source evidence
The SplObjectStorage unserialize implementation in ext/spl/spl_observer.c in PHP before 7.0.12 does not verify that a key is an object, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized memory access) via crafted serialized data.
osv:CVE-2016-7480
Complete source record
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"id": "33afa00f2a462455aa24fd8a265ebf1bc49d6a4960afd4c412c2a68f71fc6e16",
"url": "https://osv.dev/vulnerability/CVE-2016-7480",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-7480",
"summary": "The SplObjectStorage unserialize implementation in ext/spl/spl_observer.c in PHP before 7.0.12 does not verify that a key is an object, which allows remote attackers to execute arbitrary code or cause a denial of service (uninitialized memory access) via crafted serialized data.",
"evidence": "osv:CVE-2016-7480",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2016-7480",
"aliases": [
"CVE-2016-7480"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/php/php-src",
"type": "GIT",
"events": [
{
"introduced": "60fffd296abce5fc071f3c173c25a2696cf683c6"
},
{
"fixed": "e2874f7bf990ed58ba6f7abccefa2c00a0447fc7"
},
{
"fixed": "61cdd1255d5b9c8453be71aacbbf682796ac77d4"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "7.0.0"
},
{
"fixed": "7.0.11"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "61cdd1255d5b9c8453be71aacbbf682796ac77d4"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2016-7480.json",
"vanir_signatures": [
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"id": "CVE-2016-7480-40b4ffdc",
"digest": {
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"source": "https://github.com/php/php-src/commit/61cdd1255d5b9c8453be71aacbbf682796ac77d4",
"target": {
"file": "ext/spl/spl_observer.c",
"function": "SPL_METHOD"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
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{
"id": "CVE-2016-7480-8f33d31a",
"digest": {
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"source": "https://github.com/php/php-src/commit/61cdd1255d5b9c8453be71aacbbf682796ac77d4",
"target": {
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"vanir_signatures_modified": "2026-10-20T13:14:41Z"
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],
"modified": "2026-10-20T13:14:41.692543606Z",
"provider": "osv",
"references": [
"https://security.netapp.com/advisory/ntap-20180112-0001/",
"https://www.youtube.com/watch?v=LDcaPstAuPk",
"https://bugs.php.net/bug.php?id=73257",
"https://github.com/php/php-src/commit/61cdd1255d5b9c8453be71aacbbf682796ac77d4"
],
"provider_metadata": {}
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"related_cves": [
{
"value": "CVE-2016-7480",
"evidence": "/id"
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"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 387378,
"published_at": "2017-01-11T07:59:00.143+00:00"
}