# CVE-2020-9309: Silverstripe CMS malicious file upload enables script execution

Source: https://junglewise.ai/threats/cve-2020-9309-silverstripe-cms-malicious-file-upload-enables-script-execution  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-05-24  
License: CC BY 4.0 with a link back

CVE-2020-9309 · Severity: low · CVSS 3.1 · Published 2022-05-24

Silverstripe CMS malicious file upload enables script execution

Technologies: [silverstripe/cms (Packagist)](https://junglewise.ai/threats/technologies/silverstripe-cms). Vendors: [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2020-9309 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2020-9309 being exploited in the wild.

**How severe is CVE-2020-9309?** Low severity, with a CVSS score of 3.1, published 24 May 2022.

**Which products and versions are affected?** silverstripe/cms (Packagist) ECOSYSTEM:introduced=0,last_affected=4.5.0.

**Is there a fix for CVE-2020-9309?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2020-9309?** Check whether you run silverstripe/cms (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- silverstripe/cms (Packagist) ECOSYSTEM:introduced=0,last_affected=4.5.0

## Identifiers

- CVE-2020-9309
- GHSA-h77w-655f-6j3m

## Related threats

- [Silverstripe CMS cross-site scripting in breadcrumbs page list view](https://junglewise.ai/threats/cve-2026-54717-silverstripe-cms-cross-site-scripting-in-breadcrumbs-page-list)
- [Silverstripe SiteTree Creation Permission Vulnerability](https://junglewise.ai/threats/silverstripe-sitetree-creation-permission-vulnerability-69d2a833)
- [Silverstripe XSS vulnerability via VirtualPage](https://junglewise.ai/threats/silverstripe-xss-vulnerability-via-virtualpage-2b5b3803)
- [Silverstripe History XSS Vulnerability](https://junglewise.ai/threats/silverstripe-history-xss-vulnerability-c88cf02c)
- [Silverstipe CMS Stored XSS in custom meta tags](https://junglewise.ai/threats/cve-2022-37421-silverstipe-cms-stored-xss-in-custom-meta-tags)