Security advisory
In SilverStripe through 4.5, files uploaded via Forms to folders migrated from Silverstripe CMS 3.x may be put to the default "/Uploads" folder instead. This affects installations which allowed upload folder protection via the optional silverstripe/secureassets module under 3.x. This module is installed and enabled by default on the Common Web Platform (CWP). The vulnerability only affects files uploaded after an upgrade to 4.x.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-9280
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:20 UTC · Revision 1
Source evidence
In SilverStripe through 4.5, files uploaded via Forms to folders migrated from Silverstripe CMS 3.x may be put to the default "/Uploads" folder instead. This affects installations which allowed upload folder protection via the optional silverstripe/secureassets module under 3.x. This module is installed and enabled by default on the Common Web Platform (CWP). The vulnerability only affects files uploaded after an upgrade to 4.x.
osv:CVE-2020-9280
Complete source record
{
"id": "218509d7083bfe28f66685b0d96291cf938f613189388111e90dabc8a9f102cf",
"url": "https://osv.dev/vulnerability/CVE-2020-9280",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-9280",
"summary": "In SilverStripe through 4.5, files uploaded via Forms to folders migrated from Silverstripe CMS 3.x may be put to the default \"/Uploads\" folder instead. This affects installations which allowed upload folder protection via the optional silverstripe/secureassets module under 3.x. This module is installed and enabled by default on the Common Web Platform (CWP). The vulnerability only affects files uploaded after an upgrade to 4.x.",
"evidence": "osv:CVE-2020-9280",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2020-9280",
"aliases": [
"BIT-silverstripe-2020-9280",
"CVE-2020-9280",
"GHSA-592m-4533-rxq9"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/silverstripe/silverstripe-cms",
"type": "GIT",
"events": [
{
"introduced": "0c02b8872f29a1c789d3313562cde6117892d9c7"
},
{
"last_affected": "251ebb658c2e93b54d26f53ef2e0a8a7795947bc"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:silverstripe:silverstripe:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.0"
},
{
"last_affected": "4.5.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-9280.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/silverstripe/silverstripe-framework",
"type": "GIT",
"events": [
{
"introduced": "6d8df46b8a7e3281fbd1299c626dd7a5a9a14a83"
},
{
"last_affected": "f75094abcd8ff29ece4bca05a297fda106e3ba89"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:silverstripe:silverstripe:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.0"
},
{
"last_affected": "4.5.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-9280.json"
}
}
],
"modified": "2026-10-24T10:30:27.185967380Z",
"provider": "osv",
"references": [
"https://forum.silverstripe.org/c/releases",
"https://www.silverstripe.org/download/security-releases/",
"https://www.silverstripe.org/download/security-releases/cve-2020-9280"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2020-9280",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 431774,
"published_at": "2020-04-15T21:15:36.967+00:00"
}