GHSA-4h5c-5g25-v7fh TYPO3 Cross-Site Scripting in Form Framework

Not scored Published

Attackers can inject malicious scripts into TYPO3 frontend forms, potentially stealing user data or hijacking sessions.

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-4h5c-5g25-v7fh?

GHSA-4h5c-5g25-v7fh is a cross-site scripting vulnerability in typo3/cms, published on 7 Jun 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

Failing to properly encode user input, frontend forms handled by the form framework (system extension “form”) are vulnerable to cross-site scripting.

Which versions are affected by GHSA-4h5c-5g25-v7fh?

4 open source packages ship an affected version, including typo3/cms.

PackageAffectedFixed in
typo3/cms PackagistFrom 8.0.08.7.23
typo3/cms PackagistFrom 8.0.08.7.23
typo3/cms PackagistFrom 9.0.09.5.4
typo3/cms PackagistFrom 9.0.09.5.4

How do I fix GHSA-4h5c-5g25-v7fh?

Upgrade typo3/cms to a fixed version for your release line: 8.7.23 or 9.5.4.

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-4h5c-5g25-v7fh being exploited?

There is no known exploitation of GHSA-4h5c-5g25-v7fh in the wild and no public exploit code.

Sources

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