Silverstripe has Cross-site Scripting (XSS) vulnerabilities inherited from TinyMCE
Key facts
- Attack vector
- —
- Privileges required
- —
- User interaction
- —
- Attack complexity
- —
- Impact type
- —
- Confidentiality · integrity · availability
- —
- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub.
Summary
TinyMCE 4.x is vulnerable to several XSS vectors, which had been patched in later versions. Two of these have been identified as affecting `silverstripe/admin`. Only Silverstripe CMS 4 is affected by this issue. It's not possible to upgrade Silverstripe CMS 4 to use a more recent release of TinyMCE without introducing breaking changes. Instead, the security patches that shipped in later releases of TinyMCE have been backported to the TinyMCE version bundled in `silverstripe/admin`. Silverstripe CMS 5 is not affected by those vulnerabilities because it uses TinyMCE 6. You can find more information about the underlying vulnerabilities in those GitHub security advisories: - [GHSA-5h9g-x5rv-25wg Cross-site scripting vulnerability in TinyMCE](https://github.com/advisories/GHSA-5h9g-x5rv-25wg) - [GHSA-w7jx-j77m-wp65 Cross-site scripting vulnerability in TinyMCE](https://github.com/advisories/GHSA-w7jx-j77m-wp65)
Why it matters now
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/admin (Packagist) | before 1.13.6 | 1.13.6 | Patch available | GHSA-4q66-g4mm-8rg5 |
- silverstripe/admin (Packagist) Vendor— Affected before 1.13.6 Fixed in 1.13.6 Patch available GHSA-4q66-g4mm-8rg5
Remediation
- Fix · GHSA-4q66-g4mm-8rg5 silverstripe/admin (Packagist) Fixed in 1.13.6 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-4q66-g4mm-8rg5
References
Advisory 2
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences