Medium
Security advisory
A flaw was found in Moodle 3.4 to 3.4.1, 3.3 to 3.3.4, 3.2 to 3.2.7, 3.1 to 3.1.10 and earlier unsupported versions. Unauthenticated users can trigger custom messages to admin via paypal enrol script. Paypal IPN callback script should only send error emails to admin after request origin was verified, otherwise admin email can be spammed.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-1081
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:25 UTC · Revision 1
Source evidence
A flaw was found in Moodle 3.4 to 3.4.1, 3.3 to 3.3.4, 3.2 to 3.2.7, 3.1 to 3.1.10 and earlier unsupported versions. Unauthenticated users can trigger custom messages to admin via paypal enrol script. Paypal IPN callback script should only send error emails to admin after request origin was verified, otherwise admin email can be spammed.
osv:CVE-2018-1081
Complete source record
{
"id": "130b546ed545f83a0cc56b16a50539409b694cd2b894fdbd9b5f3839aec5961b",
"url": "https://osv.dev/vulnerability/CVE-2018-1081",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-1081",
"summary": "A flaw was found in Moodle 3.4 to 3.4.1, 3.3 to 3.3.4, 3.2 to 3.2.7, 3.1 to 3.1.10 and earlier unsupported versions. Unauthenticated users can trigger custom messages to admin via paypal enrol script. Paypal IPN callback script should only send error emails to admin after request origin was verified, otherwise admin email can be spammed.",
"evidence": "osv:CVE-2018-1081",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2018-1081",
"aliases": [
"CVE-2018-1081",
"GHSA-v9xq-vh72-chr4"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/moodle/moodle",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "0bd0ee444a07818fc495c95697ea1ec1a6abeefb"
},
{
"introduced": "268abfacc54c4cbf9722c1502569b311c7caefff"
},
{
"last_affected": "f41a17331714b7dd95425ad979bffa1cc74c002a"
},
{
"introduced": "b182239f21c38ea57cddb41b0c03ef3eb02709f8"
},
{
"last_affected": "36c7af0e7e1e62918da262668114a8b759f39768"
},
{
"introduced": "b87a580aa3eb23d5f05d7f619fc40a89e0f86fe5"
},
{
"last_affected": "330fa046d56a31f6d69fd35d53476afaead55535"
},
{
"introduced": "665c3ac59c35b7387a4fc70b8ac6600ce9ffeb87"
},
{
"last_affected": "c9236c6860d763916d8c7a0f8c5c63f37a0e3a0f"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "3.0.10"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.1"
},
{
"last_affected": "3.1.10"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.2"
},
{
"last_affected": "3.2.7"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.3"
},
{
"last_affected": "3.3.4"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:moodle:moodle:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "3.4.0"
},
{
"last_affected": "3.4.1"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v3.4.1",
"v3.3.4",
"v3.1.10",
"v3.2.7",
"v3.4.0",
"v3.1.9",
"v3.3.3",
"v3.2.6",
"v3.1.8",
"v3.2.5",
"v3.3.2",
"v3.3.1",
"v3.2.4",
"v3.1.7",
"v3.1.6",
"v3.3.0",
"v3.2.3",
"v3.0.10",
"v3.0.9",
"v3.1.5",
"v3.2.2",
"v3.0.8",
"v3.2.1",
"v3.1.4",
"v3.2.0",
"v3.1.3",
"v3.0.7",
"v3.1.2",
"v3.0.6",
"v3.1.1",
"v3.0.5",
"v3.1.0",
"v3.0.4",
"v3.0.3",
"v3.0.1",
"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-2018-1081.json"
}
}
],
"modified": "2026-10-24T10:30:39.381397717Z",
"provider": "osv",
"references": [
"https://moodle.org/mod/forum/discuss.php?d=367938",
"https://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-61392"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2018-1081",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 434654,
"published_at": "2018-04-04T21:29:00.213+00:00"
}