[RCU] Security updates 1.5.8 and 1.6.8 released

Dear subscribers,

We just published security updates to the 1.6 and 1.5 LTS versions of Roundcube Webmail. They both contain fixes for recently reported security vulnerabilities.

• Fix XSS vulnerability in post-processing of sanitized HTML content

[CVE-2024-42009]

• Fix XSS vulnerability in serving of attachments other than HTML or SVG

[CVE-2024-42008]

• Fix information leak (access to remote content) via insufficient CSS

filtering [CVE-2024-42010]

Credits to Oskar Zeino-Mahmalat (Sonar) for all these findings and thanks for providing a very detailed report in a private communication.

See the full changelogs in the release notes on the Github download pages for the updated versions 1.6.8 and 1.5.8.

https://github.com/roundcube/roundcubemail/releases/tag/1.6.8 https://github.com/roundcube/roundcubemail/releases/tag/1.5.8

We strongly recommend to update all productive installations of Roundcube 1.6.x and 1.5.x with this new versions.

Kind regards, Alec