Name: CVE-2026-54433: Improper Neutralization of Input During Web Page Generation
Creator: Rapid7
Published: 2026-07-14T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-54433, CWE-79, CVSS 10, EPSS 0.00311

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting (XSS) via a crafted plain-text email message. The attacker-controlled JavaScript executes within the victim's authenticated session simply by opening or previewing the message (zero-click).

CVSS Details

CVSS 3.1 Base Score: 10
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Debian	—	Upgrade roundcube	Jul 22, 2026	Jul 22, 2026
Freebsd	—	Upgrade roundcube-php85Upgrade roundcube-php84Upgrade roundcube-php83Upgrade roundcube-php82	Jul 7, 2026	Jul 5, 2026

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CVSS Details

Covered by Rapid7

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