We just published security updates to the 1.7 and 1.6 LTS 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.
https://github.com/roundcube/roundcubemail/releases/tag/1.7.2
https://github.com/roundcube/roundcubemail/releases/tag/1.6.17
We strongly recommend to update all productive installations of
Roundcube 1.6.x and 1.7.x with this new versions.
--
Alec
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