# 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.

- **Severity:** Not scored
- **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:** Yes
- **Published:** 23 May 2024

## 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 | Ecosystem | 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.

## 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.

## Fix prompt for AI coding agents

```text
Check this codebase for GHSA-mpqj-f4v3-334h and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of GHSA-mpqj-f4v3-334h in the wild and no public exploit code.

Affected packages and fixed versions:
- silverstripe/framework (Packagist): affected from 3.3.2; fixed in 3.3.3
- silverstripe/framework (Packagist): affected from 3.3.2; fixed in 3.3.3
- silverstripe/framework (Packagist): affected from 3.4.0; fixed in 3.4.1
- silverstripe/framework (Packagist): affected from 3.4.0; fixed in 3.4.1

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/GHSA-mpqj-f4v3-334h/ (Markdown: https://insights.sbomify.com/GHSA-mpqj-f4v3-334h/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GHSA-mpqj-f4v3-334h

---
From sbomify Insights: https://insights.sbomify.com/GHSA-mpqj-f4v3-334h/
Summaries are generated and may contain mistakes; the official description above is the record.