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Silverstripe XSS vulnerability via VirtualPage

silverstripe/cms Updated 02 Oct 2025

Summary

22/05/2024
MODERATE
Yes i
Moderate
6.1

GHSA-r97r-64vp-fghm: Silverstripe XSS vulnerability via VirtualPage. Affects silverstripe/cms versions >= 3.1.0, < 3.1.10. Fixed in 3.1.10. How to fix ↓

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A cross-site scripting vulnerability has been discovered in the VirtualPage class.

This vulnerability can only be exploited if a user with CMS access has posted malicious or unescaped HTML into any of the textfields of a page which a VirtualPage refers to.

This has been resolved by ensuring that VirtualPage safely escapes all field content.

How To Fix

Minimum fixed version

3.1.10

This is the first release that contains the fix.

composer require silverstripe/cms:3.1.10

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References

Related vulnerabilities

Recent vulnerabilities recorded for silverstripe/cms.

View all silverstripe/cms vulnerabilities →
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How To Fix

Minimum fixed version

3.1.10

This is the first release that contains the fix.

composer require silverstripe/cms:3.1.10

Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →

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