CVE-2024-42008 Cross-site scripting in n/a

Critical 9.3 Published Updated

Remote attackers can steal and send victim emails via XSS in Roundcube webmail triggered by malicious email attachments.

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 CVE-2024-42008?

CVE-2024-42008 is a critical cross-site scripting vulnerability in Roundcube Webmail, published on 5 Aug 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

A Cross-Site Scripting vulnerability in rcmail_action_mail_get->run() in Roundcube through 1.5.7 and 1.6.x through 1.6.7 allows a remote attacker to steal and send emails of a victim via a malicious e-mail attachment served with a dangerous Content-Type header.

Weakness: CWE-79

Which versions are affected by CVE-2024-42008?

It affects 1 product.

Products include Roundcube Webmail.

How do I fix CVE-2024-42008?

Upgrade to a fixed version.

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 CVE-2024-42008 being exploited?

There is no known exploitation of CVE-2024-42008 in the wild and no public exploit code.

Public exploit code: 3 proofs of concept on GitHub.

All Roundcube Webmail vulnerabilities

Sources

Also known as DEBIAN-CVE-2024-42008, GHSA-78jf-j6qx-c7j3, UBUNTU-CVE-2024-42008.

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