Vulnerability Description
In Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7.1, an unsanitized subject field in the draft restored value could lead to stored XSS/HTML/CSS injection on shared mailboxes.
CVSS Score
4.4
MEDIUM
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N
Related Weaknesses (CWE)
References
- https://github.com/roundcube/roundcubemail/commit/189d30a4890319cd687df959ca9f76
- https://github.com/roundcube/roundcubemail/commit/a21519187873ce962db029b6ff68e4
- 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-2026-48849?
CVE-2026-48849 is a vulnerability with a CVSS score of 4.4 (MEDIUM). In Roundcube Webmail 1.6.x before 1.6.16 and 1.7.x before 1.7.1, an unsanitized subject field in the draft restored value could lead to stored XSS/HTML/CSS injection on shared mailboxes.
How severe is CVE-2026-48849?
CVE-2026-48849 has been rated MEDIUM with a CVSS base score of 4.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-48849?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.