Silverstripe History XSS Vulnerability
A cross-site scripting vulnerability has been discovered in the CMS page history tab.
This vulnerability can only be exploited if a user with CMS access has posted malicious or unescaped HTML into any of the text fields on a page, and if the "compare mode" option is selected. The HTML will be embedded into the page unescaped.
This has been resolved by performing the text comparison in a HTML friendly way.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | silverstripe/cms | >= 3.1.0, < 3.1.10 | 3.1.10 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-79- Platform
- Composer
- Package
silverstripe/cms- Disclosed
- 22.05.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-6hh6-59j2-qrxw - CC BY 4.0
Vulnerability history: silverstripe/cms
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
- 16
- First → latest
- 11.2019 08.2026
- Without a fix
- 4
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 3
- Medium 11
- Low 1
Disclosures per year
- 2019: 1
- 2020: 0
- 2021: 0
- 2022: 11
- 2023: 0
- 2024: 3
- 2025: 0
- 2026: 1
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