Critical
Security advisory
An issue was discovered in Joomla! 3.2.0 through 3.9.24. The core shipped but unused randval implementation within FOF (FOFEncryptRandval) used an potential insecure implemetation. That has now been replaced with a call to 'random_bytes()' and its backport that is shipped within random_compat.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-23128
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:05 UTC · Revision 1
Source evidence
An issue was discovered in Joomla! 3.2.0 through 3.9.24. The core shipped but unused randval implementation within FOF (FOFEncryptRandval) used an potential insecure implemetation. That has now been replaced with a call to 'random_bytes()' and its backport that is shipped within random_compat.
osv:CVE-2021-23128
Complete source record
{
"id": "62a6e04c44e713953f62e448c45a3fe45ced1efc2a81fd779b50dbf55e0c98f6",
"url": "https://osv.dev/vulnerability/CVE-2021-23128",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-23128",
"summary": "An issue was discovered in Joomla! 3.2.0 through 3.9.24. The core shipped but unused randval implementation within FOF (FOFEncryptRandval) used an potential insecure implemetation. That has now been replaced with a call to 'random_bytes()' and its backport that is shipped within random_compat.",
"evidence": "osv:CVE-2021-23128",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2021-23128",
"aliases": [
"BIT-joomla-2021-23128",
"CVE-2021-23128"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/joomla/joomla-cms",
"type": "GIT",
"events": [
{
"introduced": "acb7a6384561a8d5917fa9854c85f52cddec9550"
},
{
"fixed": "aadf6979f8b99308c3621ea3af2ca98e678a477d"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:joomla:joomla\\!:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2.0"
},
{
"fixed": "3.9.25"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"3.9.25-rc",
"3.9.24",
"3.9.24-rc2",
"3.9.24-rc",
"3.9.20-rc",
"3.9.23",
"3.9.23-rc2",
"3.9.23-rc",
"3.9.19",
"3.9.22",
"3.9.22-rc",
"3.9.21",
"3.9.21-rc",
"3.9.20",
"3.9.19-rc",
"3.9.17-rc",
"3.9.18",
"3.9.17",
"3.9.16",
"3.9.15",
"3.9.15-rc",
"3.9.16-rc",
"3.9.14",
"3.9.14-rc",
"3.9.13",
"3.9.12",
"3.9.13-rc2",
"3.9.13-rc",
"3.9.12-rc",
"3.9.11",
"3.9.10",
"3.9.8",
"3.9.11-rc",
"3.9.9",
"3.9.6",
"3.9.5",
"3.9.9-rc",
"3.9.4",
"3.9.3",
"3.9.7",
"3.9.7-rc",
"3.9.2-rc",
"3.9.1",
"3.9.6-rc2",
"3.9.6-rc",
"3.9.0",
"3.9.0-rc",
"3.9.0-beta4",
"3.9.5-rc",
"3.9.4-rc",
"3.8.11",
"3.9.3-rc",
"3.9.2",
"3.8.8",
"3.9.1-rc",
"3.9.0-rc2",
"3.8.7",
"3.8.12",
"3.9.0-beta3",
"3.9.0-beta2",
"3.9.0-beta",
"3.8.12-rc",
"3.8.11-rc",
"3.8.6",
"3.8.10",
"3.8.9",
"3.8.4",
"3.8.9-rc",
"issues-241-257",
"3.8.8-rc",
"3.8.7-rc",
"3.8.6-rc1",
"3.8.3",
"3.8.3-rc",
"3.8.5",
"3.8.5-rc",
"3.8.4-rc2",
"3.8.4-rc",
"3.8.2",
"3.8.1",
"3.8.0",
"3.8.2-rc",
"3.8.1-rc",
"3.8.0-rc1",
"3.8.0-beta2",
"3.8.0-beta4",
"3.8.0-beta1",
"3.8.0-beta3",
"3.7.4-rc1",
"3.7.4-beta1",
"3.7.3",
"3.7.3-rc2",
"3.7.3-rc1",
"3.7.3-beta1",
"3.7.2",
"3.7.1",
"3.7.1-rc2",
"3.7.1-rc1",
"3.7.0",
"3.7.0-rc4",
"3.7.0-rc3",
"3.7.0-rc2",
"3.7.0-rc1",
"3.7.0-beta4",
"3.7.0-beta3",
"3.7.0-beta2",
"3.7.0-beta1",
"3.7.0-alpha1",
"3.6.3",
"3.6.3-rc3",
"3.6.3-rc2",
"3.6.3-rc1",
"3.6.2",
"3.6.1",
"3.6.1-rc2",
"3.6.1-rc1",
"3.6.0",
"3.6.0-rc2",
"3.6.0-rc",
"3.6.0-beta2",
"3.6.0-beta1",
"3.6.0-alpha",
"3.5.1",
"3.5.1-rc2",
"3.5.1-rc",
"3.5.0",
"3.5.0-rc4",
"3.5.0-rc2",
"3.5.0-rc",
"3.5.0-beta5",
"3.5.0-beta4",
"3.5.0-beta3",
"3.5.0-beta2",
"3.4.5",
"3.5.0-beta",
"3.4.4",
"3.4.4-rc2",
"3.4.4-rc",
"3.4.3",
"3.4.2",
"3.4.2-rc",
"3.4.1",
"3.4.1-rc2",
"3.4.1-rc",
"3.4.0",
"3.4.0-rc",
"3.4.0-beta3",
"3.4.0-beta2",
"3.4.0-beta1",
"3.2.4",
"3.3.0",
"3.2.3",
"3.2.2",
"3.2.1",
"3.2.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-23128.json"
}
}
],
"modified": "2026-10-24T10:30:24.374661547Z",
"provider": "osv",
"references": [
"https://developer.joomla.org/security-centre/842-20210302-core-potential-insecure-fofencryptrandval.html"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-23128",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 431134,
"published_at": "2021-03-04T18:15:13.363+00:00"
}