SilverStripe Folders migrated from 3.x may be unsafe to upload to
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | silverstripe/assets | >= 1.0.0, < 1.4.7, >= 1.5.0, < 1.5.2 | 1.4.7, 1.5.2 |
| Composer package | silverstripe/framework | >= 4.0.0, < 4.4.6 | 4.4.6 |
| Composer package | silverstripe/userforms | >= 5.0.0, < 5.4.2 | 5.4.2 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-9280
- https://github.com/silverstripe/silverstripe-assets/commit/6779fd3c8c1c05a3db5035bf6e541c9483d161fc
- https://github.com/silverstripe/silverstripe-userforms/commit/3bbad2044279ade5e5a5d0ae1822bafe479f8a26
- https://forum.silverstripe.org/c/releases
- https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/assets/CVE-2020-9280.yaml
- https://github.com/silverstripe/silverstripe-framework
- https://www.silverstripe.org/download/security-releases
- https://www.silverstripe.org/download/security-releases/cve-2020-9280
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-434- Platform
- Composer
- Package
silverstripe/assets, silverstripe/framework, silverstripe/userforms- Disclosed
- 24.05.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-592m-4533-rxq9 - CC BY 4.0
Vulnerability history: silverstripe/assets
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 6
- First → latest
- 11.2019 04.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 5
Disclosures per year
- 2019: 1
- 2020: 0
- 2021: 0
- 2022: 4
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 1
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SilverStripe Folders migrated from 3.x may be unsafe to upload to this entry
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