CVE-2026-54433 - Vulnerability Details - OpenCVE

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).

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable yes

Technical Impact partial

Vendors	Products
Roundcube	Webmail

No data.

No data.

References

Link	Providers
https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2

History

Thu, 16 Jul 2026 07:15:00 +0000

Type	Values Removed	Values Added
Title		Stored XSS via crafted plain-text email leads to zero-click JavaScript execution in authenticated Roundcube Webmail

Wed, 15 Jul 2026 15:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Tue, 14 Jul 2026 16:45:00 +0000

Type	Values Removed	Values Added
Description		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).
First Time appeared		Roundcube Roundcube webmail
Weaknesses		CWE-79
CPEs		cpe:2.3:a:roundcube:webmail::::::::
Vendors & Products		Roundcube Roundcube webmail
References		https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2
Metrics		cvssV3_1 `{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N'}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-07-14T16:18:16.549Z

Updated: 2026-07-15T14:10:33.042Z

Reserved: 2026-06-15T13:29:12.505Z

Link: CVE-2026-54433

Vulnrichment

Updated: 2026-07-15T14:10:28.815Z

NVD

No data.

Redhat

No data.

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