GHSA-v8m4-3w37-ghxx TYPO3 Cross-Site Scripting in Form Framework validation handling

Not scored Published

An attacker can inject malicious scripts into TYPO3 Form Framework validation error messages, potentially compromising user 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-v8m4-3w37-ghxx?

GHSA-v8m4-3w37-ghxx 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

It has been discovered that the output of field validation errors in the Form Framework is vulnerable to cross-site scripting.

Which versions are affected by GHSA-v8m4-3w37-ghxx?

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

PackageAffectedFixed in
typo3/cms PackagistFrom 10.0.010.2.1
typo3/cms PackagistFrom 10.0.010.2.1
typo3/cms PackagistFrom 8.0.08.7.30
typo3/cms PackagistFrom 8.0.08.7.30
typo3/cms PackagistFrom 9.0.09.5.12
typo3/cms PackagistFrom 9.0.09.5.12

How do I fix GHSA-v8m4-3w37-ghxx?

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-v8m4-3w37-ghxx being exploited?

There is no known exploitation of GHSA-v8m4-3w37-ghxx in the wild and no public exploit code.

Sources

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