PT-2026-57342 · Roundcube · Roundcube
Published
2026-07-09
·
Updated
2026-07-10
·
CVE-2026-54432
None
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Name of the Vulnerable Software and Affected Versions
RoundCube versions prior to 1.7
Description
A stored cross-site scripting (XSS) flaw exists where an unescaped attachment MIME type is displayed on the attachment-validation warning page. An attacker can craft a malicious MIME type string that, when rendered without proper sanitization, executes arbitrary JavaScript in the victim's session. This issue requires zero user interaction to exploit, as the script executes the moment the email is viewed.
Recommendations
Update to version 1.7.
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Related Identifiers
Affected Products
Roundcube