GHSA-xgmx-j3hv-jh9x TYPO3 Cross-Site Scripting in Link Handling
Attackers can inject malicious scripts via t3:// URLs and typolink functionality, affecting both backend forms and frontend extensions in TYPO3.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is GHSA-xgmx-j3hv-jh9x?
GHSA-xgmx-j3hv-jh9x is a cross-site scripting vulnerability in typo3/cms, published on 7 Jun 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
t3:// URL handling and typolink functionality are vulnerable to cross-site scripting. Not only regular backend forms are affected but also frontend extensions which use the rendering with typolink.Which versions are affected by GHSA-xgmx-j3hv-jh9x?
6 open source packages ship an affected version, including typo3/cms.
| Package | Affected | Fixed in |
|---|---|---|
typo3/cms Packagist | From 10.0.0 | 10.2.1 |
typo3/cms Packagist | From 10.0.0 | 10.2.1 |
typo3/cms Packagist | From 8.0.0 | 8.7.30 |
typo3/cms Packagist | From 8.0.0 | 8.7.30 |
typo3/cms Packagist | From 9.0.0 | 9.5.12 |
typo3/cms Packagist | From 9.0.0 | 9.5.12 |
How do I fix GHSA-xgmx-j3hv-jh9x?
Upgrade typo3/cms to a fixed version for your release line: 10.2.1, 8.7.30 or 9.5.12.
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-xgmx-j3hv-jh9x being exploited?
There is no known exploitation of GHSA-xgmx-j3hv-jh9x in the wild and no public exploit code.