GHSA-mpqj-f4v3-334h Silverstripe Cross-site scripting vulnerability in VersionedRequestFilter
An attacker can inject arbitrary HTML into the CMS login page via unescaped URLs, potentially leading to session hijacking or malicious script execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is GHSA-mpqj-f4v3-334h?
GHSA-mpqj-f4v3-334h is a cross-site scripting vulnerability in silverstripe/framework, published on 23 May 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A cross-site scripting vulnerability in VersionedRequestFilter has been found.
If an incoming user request should not be able to access the requested stage, an error message is created for display on the CMS login page that they are redirected to. In this error message, the URL of the requested page is interpolated into the error message without being escaped; hence, arbitrary HTML can be injected into the CMS login page.
Which versions are affected by GHSA-mpqj-f4v3-334h?
4 open source packages ship an affected version, including silverstripe/framework.
| Package | Affected | Fixed in |
|---|---|---|
silverstripe/framework Packagist | From 3.3.2 | 3.3.3 |
silverstripe/framework Packagist | From 3.3.2 | 3.3.3 |
silverstripe/framework Packagist | From 3.4.0 | 3.4.1 |
silverstripe/framework Packagist | From 3.4.0 | 3.4.1 |
How do I fix GHSA-mpqj-f4v3-334h?
Upgrade silverstripe/framework to a fixed version for your release line: 3.3.3 or 3.4.1.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is GHSA-mpqj-f4v3-334h being exploited?
There is no known exploitation of GHSA-mpqj-f4v3-334h in the wild and no public exploit code.