High
Security advisory
A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. The "delete related badge" functionality did not include the necessary token check to prevent a CSRF risk.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-43559
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:35 UTC · Revision 1
Source evidence
A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. The "delete related badge" functionality did not include the necessary token check to prevent a CSRF risk.
osv:CVE-2021-43559
Complete source record
{
"id": "e9d85ffb84d10f92a63c8c921d5b36b888fad6ef4e8e61608aa505382e7be50f",
"url": "https://osv.dev/vulnerability/CVE-2021-43559",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-43559",
"summary": "A flaw was found in Moodle in versions 3.11 to 3.11.3, 3.10 to 3.10.7, 3.9 to 3.9.10 and earlier unsupported versions. The \"delete related badge\" functionality did not include the necessary token check to prevent a CSRF risk.",
"evidence": "osv:CVE-2021-43559",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2021-43559",
"aliases": [
"BIT-moodle-2021-43559",
"CVE-2021-43559",
"GHSA-3jrj-x6cj-97cp"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/moodle/moodle",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "6f7e3ca2f7e853a183559cfb6d10fa0eb8fc6877"
},
{
"introduced": "500c131eb49771e36f68d151dfa37fef5a9bc2df"
},
{
"fixed": "b02dd253b8e111cfa2c22883bb1d831c6f1f5f63"
},
{
"introduced": "ec58cefefb2722f61f77c9a2b6a12d40a8c078a0"
},
{
"fixed": "08534dff5030462233cede83148f8f6ba727f3a8"
},
{
"introduced": "94f2d3fc4b974c5c7d500988c56b7ca15f58d7ec"
},
{
"fixed": "e1ad263f906edb699a3f1dedaef90c90d8afe47d"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "3.8.8"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.9.0"
},
{
"fixed": "3.9.11"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.10.0"
},
{
"fixed": "3.10.8"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.11.0"
},
{
"fixed": "3.11.4"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v3.11.3",
"v3.9.10",
"v3.10.7",
"v3.11.1",
"v3.11.2",
"v3.10.6",
"v3.9.9",
"v3.10.5",
"v3.9.8",
"v3.11.0",
"v3.10.4",
"v3.9.7",
"v3.10.3",
"v3.9.6",
"v3.10.2",
"v3.8.8",
"v3.9.5",
"v3.8.7",
"v3.10.1",
"v3.9.4",
"v3.9.3",
"v3.8.6",
"v3.10.0",
"v3.9.2",
"v3.8.5",
"v3.8.4",
"v3.9.1",
"v3.9.0",
"v3.8.3",
"v3.8.2",
"v3.8.1",
"v3.8.0",
"v3.8.0-rc1",
"v3.8.0-beta",
"v3.7.0",
"v3.7.0-rc2",
"v3.7.0-rc1",
"v3.7.0-beta",
"v3.6.0",
"v3.6.0-rc2",
"v3.6.0-rc3",
"v3.6.0-rc1",
"v3.6.0-beta",
"v3.5.0",
"v3.5.0-rc1",
"v3.5.0-beta",
"v3.4.0",
"v3.4.0-rc2",
"v3.4.0-rc3",
"v3.4.0-rc1",
"v3.4.0-beta",
"v3.3.0",
"v3.3.0-rc3",
"v3.3.0-rc2",
"v3.3.0-rc1",
"v3.3.0-beta",
"v3.2.0-rc2",
"v3.2.0",
"v3.2.0-rc4",
"v3.2.0-beta",
"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",
"v3.0.0-rc4",
"v3.0.0-rc2",
"v3.0.0-rc1",
"v3.0.0-beta",
"v2.9.0",
"v2.9.0-rc2",
"v2.9.0-rc1",
"v2.9.0-beta",
"v2.8.0",
"v2.8.0-rc2",
"v2.8.0-rc1",
"v2.8.0-beta",
"v2.7.0",
"v2.7.0-rc2",
"v2.7.0-rc1",
"v2.7.0-beta",
"v2.6.0",
"v2.6.0-rc1",
"v2.6.0-beta",
"v2.5.0",
"v2.5.0-rc1",
"v2.5.0-beta",
"v2.4.0-beta",
"v2.4.0-rc1",
"v2.4.0",
"v2.3.0",
"v2.3.0-rc1",
"v2.3.0-beta",
"v2.2.0",
"v2.2.0-rc1",
"v2.2.0-beta",
"v2.1.0",
"v2.0.1",
"v2.0.0",
"v2.0.0-rc2",
"v2.0.0-rc1",
"v1.3.0",
"v1.2.1",
"v1.2.0",
"v1.1.1",
"v1.1.0",
"v1.0.9",
"v1.0.8",
"v1.0.7",
"v1.0.6",
"v1.0.5",
"v1.0.4",
"v1.0.3",
"v1.0.2",
"v1.0.1",
"v1.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43559.json"
}
}
],
"modified": "2026-10-24T10:30:55.249670343Z",
"provider": "osv",
"references": [
"https://bugzilla.redhat.com/show_bug.cgi?id=2021517",
"https://moodle.org/mod/forum/discuss.php?d=429099"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:extra_packages_for_enterprise_linux",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "35"
},
{
"last_affected": "35"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2021-43559",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 438375,
"published_at": "2021-11-22T16:15:08.287+00:00"
}