CVE-2026-54432 | Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2 allow… | CVSS 4.7 MEDIUM

Description

Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2 allows Stored Cross-Site Scripting (XSS). The issue occurs because the attachment MIME type is not properly escaped on the attachment-validation warning page.

Metadata

CVE ID: CVE-2026-54432
State: PUBLISHED
Assigner: mitre
Reserved: 2026-06-15 13:27 UTC
Published: 2026-07-14 16:21 UTC
Last updated: 2026-07-15 15:13 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

4.7 MEDIUM CVSS 3.1

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: no
Tech. Impact: partial

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
4.7	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/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