VulnerabilityAwaiting Analysis

CVE-2026-54432

Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2 allows Stored Cross-Site Scripting (XSS).

MEDIUM 4.7EPSS 0.21%

Does this matter?

Lower severity and a low EPSS score (0.21%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 3.1: 4.7 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.21% probability · 11th percentile
CISA KEV: Not listed
Weakness: CWE-79
Source: cve@mitre.org

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.