SilverStripe CMS Cross-site Scripting vulnerabilities inherited from TinyMCE
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.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | silverstripe/admin | >= 1.0.0, < 1.13.6 | 1.13.6 |
References
- Weakness (CWE)
CWE-79- Platform
- Composer
- Package
silverstripe/admin- Disclosed
- 23.08.2023
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-jxcx-3h54-qqxx - CC BY 4.0
Vulnerability history: silverstripe/admin
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
- 8
- First → latest
- 10.2021 05.2024
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Medium 7
- Low 1
Disclosures per year
- 2021: 1
- 2022: 2
- 2023: 3
- 2024: 2
- 2025: 0
- 2026: 0
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SilverStripe CMS Cross-site Scripting vulnerabilities inherited from TinyMCE this entry
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