Cross-site Scripting (XSS) Affecting roundcube package, versions <1.4.15+dfsg.1-1+deb11u9
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Cross-site Scripting (XSS) vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-DEBIAN11-ROUNDCUBE-17037360
- published29 May 2026
- disclosed25 May 2026
Introduced: 25 May 2026
NewCVE-2026-48848 (opens in a new tab)How to fix?
Upgrade Debian:11 roundcube to version 1.4.15+dfsg.1-1+deb11u9 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream roundcube package and not the roundcube package as distributed by Debian.
See How to fix? for Debian:11 relevant fixed versions and status.
Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7 has insufficient HTML sanitization that could lead to Cascading Style Sheets (CSS) injection via an SVG document that has an animate element with the attributeName attribute.
References
- https://security-tracker.debian.org/tracker/CVE-2026-48848
- https://github.com/roundcube/roundcubemail/commit/58e5263f341e6a418774fb6d2643669a3c4d8a27
- https://github.com/roundcube/roundcubemail/commit/c960d102472dc579e15907d5bcdc3103a090ccf9
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.16
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.1
- https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1