GHSA-6fc6-cj2j-h22x TYPO3 Multiple Cross-Site Scripting vulnerabilities in frontend
Authenticated editors can inject arbitrary HTML into frontend components due to improper encoding, enabling cross-site scripting attacks.
- 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-6fc6-cj2j-h22x?
GHSA-6fc6-cj2j-h22x is a cross-site scripting vulnerability in typo3/cms, published on 3 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
Which versions are affected by GHSA-6fc6-cj2j-h22x?
4 open source packages ship an affected version, including typo3/cms.
| Package | Affected | Fixed in |
|---|---|---|
typo3/cms Packagist | From 6.2.0 | 6.2.16 |
typo3/cms Packagist | From 6.2.0 | 6.2.16 |
typo3/cms Packagist | From 7.0.0 | 7.6.1 |
typo3/cms Packagist | From 7.0.0 | 7.6.1 |
How do I fix GHSA-6fc6-cj2j-h22x?
Upgrade typo3/cms to a fixed version for your release line: 6.2.16 or 7.6.1.
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-6fc6-cj2j-h22x being exploited?
There is no known exploitation of GHSA-6fc6-cj2j-h22x in the wild and no public exploit code.