========================================================================== Ubuntu Security Notice USN-8097-2 March 18, 2026
roundcube regression
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
Summary:
USN-8097-1 introduced a regression in roundcube
Software Description:
- roundcube: skinnable AJAX based webmail solution for IMAP servers - metapack
Details:
USN-8097-1 fixed a vulnerability in roundcube. The update caused
a regression affecting the HTML sanitizer, preventing Roundcube from rendering
any email message body. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that Roundcube Webmail did not properly sanitize the
animate tag within SVG documents. An attacker could possibly use
this issue to cause a cross-site scripting attack.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS
roundcube-core 1.4.3+dfsg.1-1ubuntu0.1~esm7
Available with Ubuntu Pro
roundcube-plugins 1.4.3+dfsg.1-1ubuntu0.1~esm7
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-8097-2
https://ubuntu.com/security/notices/USN-8097-1
https://launchpad.net/bugs/2144682
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