CVE-2026-48849

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.

Score

CVSS 3.1 4.4 Medium

Status

Deferred - cve@mitre.org

Published

2026-05-25

Last modified

2026-05-26

Weaknesses

CWE-79

Affected products

• Webmail (Roundcube)

References

• https://github.com/roundcube/roundcubemail/commit/189d30a4890319cd687df959ca9f768a3a613d61
• https://github.com/roundcube/roundcubemail/commit/a21519187873ce962db029b6ff68e47bd7f3fd8a
• 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