GHSA-8j9v-4hhh-x43c Cross-Site Scripting (XSS) in TYPO3 component CSS styled content
Authenticated editors can inject arbitrary HTML or JavaScript via the CSS styled content component due to improper input encoding.
- 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-8j9v-4hhh-x43c?
GHSA-8j9v-4hhh-x43c is a cross-site scripting vulnerability in typo3/cms, published on 4 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-8j9v-4hhh-x43c?
4 open source packages ship an affected version, including typo3/cms.
| Package | Affected | Fixed in |
|---|---|---|
typo3/cms Packagist | From 6.2.0 | 6.2.19 |
typo3/cms Packagist | From 6.2.0 | 6.2.19 |
typo3/cms Packagist | From 7.6.0 | 7.6.4 |
typo3/cms Packagist | From 7.6.0 | 7.6.4 |
How do I fix GHSA-8j9v-4hhh-x43c?
Upgrade typo3/cms to a fixed version for your release line: 6.2.19 or 7.6.4.
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-8j9v-4hhh-x43c being exploited?
There is no known exploitation of GHSA-8j9v-4hhh-x43c in the wild and no public exploit code.