SilverStripe CMS Cross-site Scripting vulnerabilities inherited from TinyMCE
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub. Impact type from CWE-79.
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 these vulnerabilities. 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 these vulnerabilities because it uses TinyMCE 6.
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) | 1.0.0 to before 1.13.6 | 1.13.6 | Patch available | GHSA-jxcx-3h54-qqxx |
- silverstripe/admin (Packagist) Vendor— Affected 1.0.0 to before 1.13.6 Fixed in 1.13.6 Patch available GHSA-jxcx-3h54-qqxx
Remediation
- Fix · GHSA-jxcx-3h54-qqxx silverstripe/admin (Packagist) Fixed in 1.13.6 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-jxcx-3h54-qqxx
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences