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                            CERT-Renater

                Note d'Information No. 2026/VULN723
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DATE                : 06/07/2026

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running Roundcube Webmail versions prior
                                     to 1.6.17, 1.7.2.
 
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https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2
_____________________________________________________________________



Security updates 1.6.17 and 1.7.2 released

Published: 05 July 2026

    Tags: releases updates security

We just published security updates to the 1.6 LTS and 1.7 versions of
Roundcube Webmail. They both contain fixes for recently reported
security vulnerabilities.


Security fixes

    Fix an infinite loop in TNEF (winmail.dat) decoder (#10193), reported
by stafra.
    Fix various vulnerabilities in the password plugin using
session-injected username, reported by Glendaenri and peppersghost.
    Fix stored XSS via unescaped attachment MIME type on the
attachment-validation warning page [CVE-2026-54432], reported by Bohdan
Kurinnoy, Samsung R&D Institute Ukraine (SRUKR).
    Fix SSRF bypass via specific local address URLs - two new cases,
reported by Leenear.
    Fix zero-click stored XSS in plain-text rendering [CVE-2026-54433],
reported by Bohdan Kurinnoy, Samsung R&D Institute Ukraine (SRUKR).
    Fix DoS via crafted compressed-RTF size in the TNEF (winmail.dat)
file, reported by h0rk1p.

See the full changelogs in the release notes on the Github download
pages for the updated versions 1.6.17 and 1.7.2.

We strongly recommend to update all productive installations of
Roundcube 1.6.x and 1.7.x with this new versions.


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