MEDIUM6.1

GHSA-r97r-64vp-fghm

Silverstripe XSS vulnerability via VirtualPage

Quick fix

GHSA-r97r-64vp-fghm — silverstripe/cms: upgrade to the fixed version with the command below.

composer require silverstripe/cms:^3.1.10

Details

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

Packagist/silverstripe/cms

Introduced in: 3.1.0Fixed in: 3.1.10

Fixcomposer require silverstripe/cms:^3.1.10

References

https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/cms/SS-2015-005-1.yaml[WEB]
https://github.com/silverstripe/silverstripe-cms[PACKAGE]
https://www.silverstripe.org/software/download/security-releases/ss-2015-005[WEB]