Medium
Security advisory
An authentication bypass risk was identified in the external database authentication functionality, due to a type juggling vulnerability.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-40693
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:36 UTC · Revision 1
Source evidence
An authentication bypass risk was identified in the external database authentication functionality, due to a type juggling vulnerability.
osv:CVE-2021-40693
Complete source record
{
"id": "f9716dd3bc9de2461f4d54ae1447f918fe0f67152cca294743f3a2cdab5b443d",
"url": "https://osv.dev/vulnerability/CVE-2021-40693",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-40693",
"summary": "An authentication bypass risk was identified in the external database authentication functionality, due to a type juggling vulnerability.",
"evidence": "osv:CVE-2021-40693",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2021-40693",
"aliases": [
"BIT-moodle-2021-40693",
"CVE-2021-40693",
"GHSA-2jxg-mv2m-j4r7"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/moodle/moodle",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "0ec02c2a67c5030c6b6a5b6cc7d5c174c4e5c446"
},
{
"introduced": "ec58cefefb2722f61f77c9a2b6a12d40a8c078a0"
},
{
"fixed": "5af6e79b38980c76fd50d8b8da3bd60903b1e44c"
},
{
"introduced": "94f2d3fc4b974c5c7d500988c56b7ca15f58d7ec"
},
{
"fixed": "ab931f6aa7a7f1aaf356548dbe49f846778a7c81"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "3.9.10"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.10.0"
},
{
"fixed": "3.10.7"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.11.0"
},
{
"fixed": "3.11.3"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
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"v3.11.2",
"v3.10.6",
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"v3.2.0-rc5",
"v3.2.0-rc3",
"v3.2.0-rc1",
"v3.1.0-beta",
"v3.1.0",
"v3.1.0-rc2",
"v3.1.0-rc1",
"v3.0.0-rc3",
"v3.0.0",
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"v2.2.0",
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"v1.3.0",
"v1.2.1",
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"v1.0.4",
"v1.0.3",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-40693.json"
}
}
],
"modified": "2026-10-24T10:30:30.950671108Z",
"provider": "osv",
"references": [
"https://bugzilla.redhat.com/show_bug.cgi?id=2043417"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-40693",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 432696,
"published_at": "2022-09-29T03:15:14.35+00:00"
}