Incorrect Resource Transfer Between Spheres 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.
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Test your applications- Snyk IDSNYK-DEBIAN11-ROUNDCUBE-17037602
- published29 May 2026
- disclosed25 May 2026
Introduced: 25 May 2026
NewCVE-2026-48846 (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.
In Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7.1, the remote image blocking feature can be bypassed via a crafted CSS var() value in an e-mail message, which may lead to information disclosure or access-control bypass.
References
- https://security-tracker.debian.org/tracker/CVE-2026-48846
- https://github.com/roundcube/roundcubemail/commit/59cca80908a61e662c5f81741449e9aeb91e8abe
- https://github.com/roundcube/roundcubemail/commit/852350486b88b35b8544e8a630fad89e99e2150a
- 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