Vulnerability Description
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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/roundcube/roundcubemail/commit/59cca80908a61e662c5f81741449e9
- https://github.com/roundcube/roundcubemail/commit/852350486b88b35b8544e8a630fad8
- 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
FAQ
What is CVE-2026-48846?
CVE-2026-48846 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 dis...
How severe is CVE-2026-48846?
CVE-2026-48846 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-48846?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.