High
Security advisory
The nextBytes function in the SecureRandom class in Symfony before 2.3.37, 2.6.x before 2.6.13, and 2.7.x before 2.7.9 does not properly generate random numbers when used with PHP 5.x without the paragonie/random_compat library and the openssl_random_pseudo_bytes function fails, which makes it easier for attackers to defeat cryptographic protection mechanisms via unspecified vectors.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2016-1902
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:24 UTC · Revision 1
Source evidence
The nextBytes function in the SecureRandom class in Symfony before 2.3.37, 2.6.x before 2.6.13, and 2.7.x before 2.7.9 does not properly generate random numbers when used with PHP 5.x without the paragonie/random_compat library and the openssl_random_pseudo_bytes function fails, which makes it easier for attackers to defeat cryptographic protection mechanisms via unspecified vectors.
osv:CVE-2016-1902
Complete source record
{
"id": "db654b8adb78fa2ecb83a9b79755cda5b41d16b1da6683618dd972d5d8c55a16",
"url": "https://osv.dev/vulnerability/CVE-2016-1902",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2016-1902",
"summary": "The nextBytes function in the SecureRandom class in Symfony before 2.3.37, 2.6.x before 2.6.13, and 2.7.x before 2.7.9 does not properly generate random numbers when used with PHP 5.x without the paragonie/random_compat library and the openssl_random_pseudo_bytes function fails, which makes it easier for attackers to defeat cryptographic protection mechanisms via unspecified vectors.",
"evidence": "osv:CVE-2016-1902",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2016-1902",
"aliases": [
"CVE-2016-1902",
"GHSA-jjx5-fq5g-8xpc"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
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"modified": "2026-10-24T10:45:23.392659661Z",
"provider": "osv",
"references": [
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"https://www.landaire.net/blog/cve-2016-1902-symfony-securerandom/"
],
"provider_metadata": {
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"related_cves": [
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},
"source_id": "core-osv",
"document_id": 441148,
"published_at": "2016-06-01T22:59:01.393+00:00"
}