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[USN-7636-1] Roundcube Webmail vulnerability

Posted on 15 July 2025
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-7636-1
July 14, 2025

roundcube vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 24.04 LTS

Summary:

Roundcube Webmail could be made to expose sensitive information over the
network.

Software Description:
- roundcube: skinnable AJAX based webmail solution for IMAP servers

Details:

It was discovered that Roundcube Webmail incorrectly handled sanitization in
the message_body function. A remote attacker could possibly use this issue to
send and receive emails as another user.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 24.04 LTS
roundcube 1.6.6+dfsg-2ubuntu0.1+esm1
Available with Ubuntu Pro
roundcube-core 1.6.6+dfsg-2ubuntu0.1+esm1
Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7636-1
CVE-2024-42009

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