Silverstripe HtmlEditor embed url sanitisation
Priority LOW 38Published · Updated
Key facts
- Attack vector
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- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
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- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub.
Summary
"Add from URL" doesn't clearly sanitise URL server side HtmlEditorField_Toolbar has an action HtmlEditorField_Toolbar#viewfile, which gets called by the CMS when adding a media "from a URL" (i.e. via oembed). This action gets the URL to add in the GET parameter FileURL. However it doesn't do any URL sanitising server side. The current logic will pass this through to Oembed, which will probably reject most dangerous URLs, but it's possible future changes would break this.
Why it matters now
Fix Fixed silverstripe/framework (Packagist): 3.2.1
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | silverstripe/framework (Packagist) | 3.0.0 to before 3.2.1 | 3.2.1 | Patch available | GHSA-qp29-wcc2-vmpc |
- silverstripe/framework (Packagist) Vendor— Affected 3.0.0 to before 3.2.1 Fixed in 3.2.1 Patch available GHSA-qp29-wcc2-vmpc
Remediation
- Fix · GHSA-qp29-wcc2-vmpc silverstripe/framework (Packagist) Fixed in 3.2.1 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-qp29-wcc2-vmpc
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences