Roundcube Webmail Issues Security Updates to Address Multiple Vulnerabilities
The Roundcube Webmail development team released versions 1.7.5 and 1.6.20 on October 19, 2026, to resolve approximately 20 security issues affecting email viewing, authentication, and external content handling. The updates address command injection flaws in IMAP actions that could be triggered via newline characters, as well as header injection vulnerabilities involving sender display names and parameters such as References, In-Reply-To, Message-ID, and From. Additional fixes cover subject lines and data URIs in forwarded attachments, media types in inline images, and bypasses in server-side request forgery filters. The patches also mitigate cross-site request forgery evasion in spam reporting and cross-site scripting issues stemming from password driver error responses. Administrators are urged to apply the updates promptly to prevent exploitation of these weaknesses.
Security NEXTOct 20, 2026Translated from Japanese