CVE-2026-54433 | In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, t… | CVSS 7.2 HIGH

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).

Metadata

CVE ID: CVE-2026-54433
State: PUBLISHED
Assigner: mitre
Reserved: 2026-06-15 13:29 UTC
Published: 2026-07-14 16:18 UTC
Last updated: 2026-07-14 16:18 UTC
Primary CWE: CWE-79
CWE-79 Improper Neutralization of Input During Web Page Gene…
Vendor / Product: Roundcube / Webmail
Sources: cve.org · NVD

Severity & Metrics

7.2 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Affected products (1)

Vendor	Product	Platform	Versions
Roundcube	Webmail	—	1.6.0 < 1.6.17, 1.7.0 < 1.7.2

Weakness (CWE)

CWE	Source	Description
CWE-79	cna	CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.2	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

References (1)

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