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Ubuntu 24.04 LTS 8223-1 Roundcube Critical Cross-Site Scripting

ubuntu
Calendar Grey April 29, 2026
Dist Ubuntu Esm H88
Numerous issues fixed in Roundcube Webmail for multiple Ubuntu versions. Important updates recommended for security.
Several security issues were fixed in Roundcube Webmail.

Summary

Several security issues were fixed in Roundcube Webmail.

Software Description:

- roundcube: skinnable AJAX based webmail solution for IMAP servers - metapackage

Details:

It was discovered that Roundcube Webmail mishandled Punycode xn-- domain names.

An attacker could possibly use this issue to cause a homograph attack. (CVE-2019-15237)

It was discovered that Roundcube Webmail did not properly sanitize certain

attributes when handling CSS within HTML messages and certain SVG attributes.

An attacker could possibly use this issue to cause a cross-site scripting attack.

(CVE-2024-38356, CVE-2024-38357)

It was discovered that Roundcube Webmail did not properly sanitize certain HTML

attributes when rendering e-mail messages. An attacker could possibly use this

issue to cause a cross-site scripting attack. (CVE-2024-42008)

It was discovered that Roundcube Webmail did not properly filter certain CSS token

sequences within rendered e-mail messages. An attacker could possibly use this

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory critical cross site scripting Ubuntu roundcube CSS Injection

Update Instructions

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

Ubuntu 24.04 LTS
  roundcube-core                  1.6.6+dfsg-2ubuntu0.1+esm3
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  roundcube-core                  1.5.0+dfsg.1-2ubuntu0.1~esm6
                                  Available with Ubuntu Pro
  roundcube-plugins               1.5.0+dfsg.1-2ubuntu0.1~esm6
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  roundcube-core                  1.4.3+dfsg.1-1ubuntu0.1~esm8
                                  Available with Ubuntu Pro
  roundcube-plugins               1.4.3+dfsg.1-1ubuntu0.1~esm8
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  roundcube-core                  1.3.6+dfsg.1-1ubuntu0.1~esm8
                                  Available with Ubuntu Pro
  roundcube-plugins               1.3.6+dfsg.1-1ubuntu0.1~esm8
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  roundcube-core                  1.2~beta+dfsg.1-0ubuntu1+esm8
                                  Available with Ubuntu Pro
  roundcube-plugins               1.2~beta+dfsg.1-0ubuntu1+esm8
                                  Available with Ubuntu Pro

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

References

https://ubuntu.com/security/notices/USN-8223-1

CVE-2019-15237, CVE-2024-38356, CVE-2024-38357, CVE-2024-42008,

CVE-2024-42010, CVE-2026-25916, CVE-2026-26079

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8223-1

Topics%20covered

Topics Covered

security advisory critical cross site scripting Ubuntu roundcube CSS Injection

Package Information

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