Medium
Security advisory
It was found in Moodle before version 3.10.1 that some search inputs were vulnerable to reflected XSS due to insufficient escaping of search queries.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-20183
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:01 UTC · Revision 1
Source evidence
It was found in Moodle before version 3.10.1 that some search inputs were vulnerable to reflected XSS due to insufficient escaping of search queries.
osv:CVE-2021-20183
Complete source record
{
"id": "e941df01dab90e3942fd5d1333ce53297d1c5fa7404e45c2e26ec98da6dd5e22",
"url": "https://osv.dev/vulnerability/CVE-2021-20183",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-20183",
"summary": "It was found in Moodle before version 3.10.1 that some search inputs were vulnerable to reflected XSS due to insufficient escaping of search queries.",
"evidence": "osv:CVE-2021-20183",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2021-20183",
"aliases": [
"BIT-moodle-2021-20183",
"CVE-2021-20183",
"GHSA-xhfx-rm8q-c3xv"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/moodle/moodle",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "00821c744c3f102e706500f9815e0fa5e6b8fb25"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "3.10.1"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v3.10.0-rc1",
"v3.10.0",
"v3.10.0-rc2",
"v3.10.0-beta",
"v3.9.0-rc2",
"v3.9.0",
"v3.9.0-rc3",
"v3.9.0-rc1",
"v3.9.0-beta",
"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-2021-20183.json"
}
}
],
"modified": "2026-10-24T10:30:34.330986649Z",
"provider": "osv",
"references": [
"https://moodle.org/mod/forum/discuss.php?d=417166"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2021-20183",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 433492,
"published_at": "2021-01-28T19:15:13.16+00:00"
}