Roundcube 1.6.16 security fixes

[Ralph]

Roundcube 1.6.16
Fix stored XSS/HTML/CSS injection in subject field of the draft restore dialog, reported by zazy
Fix CSS injection bypass in HTML sanitizer via SVG <animate attributeName="style">, reported by wooseokdotkim
Fix pre-auth SQL injection in virtuser_query plugin via preg_replace backslash escape bypass, reported by skull
Fix SSRF bypass via specific local address URLs
Fix local/private URL fetch bypass when remote resources were not allowed, reported by Orange Cyberdefense Vulnerability Disclosure Team
Fix bypass of remote image blocking via CSS var(), reported by Geame
Fix pre-auth arbitrary file delete via redis/memcache session poisoning bypass, reported by valent1
Fix code injection vulnerability - remove support for code evaluation in LDAP autovalues option, reported by Glendaenri

Details:
https://github.com/roundcube/roundcubem ... tag/1.6.16

[Ghoste]

Hello,
for this, will a script appear and we run it automatically or does Roundcube have to be updated manually?
I find the update steps on the forum??, I don't want to break anything on the server, I'm new to the forum, and a KeyHelp user, after 9 years of CWP Panel.

THX!

[Ralph]

Hello,
for this, will a script appear and we run it automatically or does Roundcube have to be updated manually?
I find the update steps on the forum??, I don't want to break anything on the server, I'm new to the forum, and a KeyHelp user, after 9 years of CWP Panel.

THX!

This will be included w/ the upcoming panel update; it is just an informational note. The developer will address it as soon as possible.
Do not update RC by yourself unless you know exactly what to do.

[Ghoste]

Thank you Ralph,
I appreciate the promptness with which you responded to the requests, we are waiting for the automatic update from KeyHelp.

[Ralph]

I appreciate the promptness with which you responded to the requests, we are waiting for the automatic update from KeyHelp.

Thanks, but I'm not part of the support team
You'd be better off thanking the Developer and the Keyhelp Team.

[Ralph]

This is a security update to the LTS version 1.6 of Roundcube Webmail.
It provides fixes to recently reported security vulnerabilities:

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 Instit
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.

This version is considered stable and we recommend to update all productive installations of Roundcube 1.6.x with it. Please do backup your data before updating!
Details:
https://github.com/roundcube/roundcubem ... tag/1.6.17

[Ralph]

This is a security update to the version 1.6 of Roundcube Webmail.
It provides fixes to recently reported security vulnerabilities:

Add basic validation for content proxied by the css proxy
Fix SSRF bypass via specific local address URLs using 100.64.0.0/10 and fe80::/10 nets, reported by Dmytro Ivanenko
Fix SSRF filter bypass via various forms of nip.io/sslip.io hostnames evading is_local_url() check, reported by Milan Hoppe
Fix remote content blocking bypass via unclosed url() in a FuncIRI attribute, reported by Milan Hoppe
Fix LDAP filter injection via unescaped %u/%fu/%d substitution into the search_filter, reported by Milan Hoppe
Fix arbitrary Sieve script injection via a filter rule name bypassing managesieve_disabled_actions, reported by Milan Hoppe
Fix RCE via cmd_learn driver of markasjunk plugin, reported by nept1337
Fix IMAP command injection via mail search and LITERAL+ byte-count desynchronization, reported by Zach Hanley of Horizon3.ai
Fix password's modoboa driver leak of an authentication token to a user-controlled host, reported by meifukun
Fix stored XSS in "Add to address book" action, reported by Paulos Yibelo from pwn.ai
Fix HTML/CSS sanitization bypass via SVG animate by attribute, reported by vectrain

https://github.com/roundcube/roundcubem ... tag/1.6.18

[Ghoste]

Hi Ralph, do we ultimately have to perform these updates manually, or is there a script in the panel that handles the version upgrade? Alexander announced that a new version of KH is coming out on August 10th. Will the new version of KeyHelp include these security updates?

[Alexander]

Will the new version of KeyHelp include these security updates?

The new KeyHelp version will ship with Roundcube 1.7.3

[Ralph]

Roundcube Updates werden in der Regel mit einem Keyhelp Panel Update ausgeliefert.
Also Panel Update abwarten oder auf alternativen Webmailer umstellen, bitte keine Fragen bzgl. manueller eigenständiger RC Aktualisierung hier posten.

@Alexander
Scheint sich endlos an anderern Stellen immer zu wiederholen, sieht derweil umfangreich aus ...
Wäre so ein RC Update, aus der Reihe ... nicht einfacher via Patch Manager und installer script machbar, ohne ein komplettes Keyhelp Version Update zu veröffentlichen (sieht im Zusammenhang mit RC aufwendig aus) ?

This is a security update to the version 1.7 of Roundcube Webmail.
It provides fixes to recently reported security vulnerabilities:
Fix IMAP command injection via CRLF in _uid parameter of mail/headers and mail/viewsource action, reported by Wahab "NeoX" K.
Fix bug where an alias login wasn't qualified by IMAP host, reported by Milan Hoppe.
Add a size limit to the CSS proxy content processing, reported by Milan Hoppe.
Fix SSRF filter (is_local_url()) bypass via NAT64 64:ff9b::/96, reported by dizconnect.
Fix remote content blocking bypass via SVG SMIL by attribute, reported by Milan Hoppe.
Fix remote content blocking bypass via CSS escapes in FuncIRI attributes (again), reported by Milan Hoppe.
Fix passing potentally unsafe attachment content into ImageMagick on image resize, reported by Paulos Yibelo
Fix mail header injection via the From display-name in the Bounce (resend) action, reported by Clay.
Fix mail header injection via References/In-Reply-To/Message-ID/From parameters, reported by Sunil Tripathy.
Fix object injection primitive in rcube_session::unserialize() via "!"-prefixed session keys, reported by Oli Z.
Fix ImageMagick resource limits bypass by GD fallback during thumbnail generation, reported by GoldenSW.
Fix CSS scoping bypass in HTML messages using at-rules, reported by GoldenSW.
Fix bug where deprecated action aliases bypassed disabled_actions setting, reported by Squirt1e, Atum, N0b0dy, and Gh0u1L5.
Fix IMAP command injection via CRLF in _flag parameter of mail/mark action, reported by Squirt1e, Atum, N0b0dy, and Gh0u1L5.
Fix CSRF validation bypass in the mark-as-junk action, reported by Squirt1e, Atum, N0b0dy, and Gh0u1L5.
Fix XSS issue in handling of password driver error responses, reported by Squirt1e, Atum, N0b0dy, and Gh0u1L5.
Fix mail header injection via subject of a message forwarded as attachment, reported by Squirt1e, Atum, N0b0dy, and Gh0u1L5.
Fix mail header injection via media type in an inline image data URI, reported by Squirt1e, Atum, N0b0dy, and Gh0u1L5.
Fix bug where Password Modoboa driver could change password for another account, reported by Squirt1e, Atum, N0b0dy, and Gh0u1L5.
Fix unsafe use of a login name in SquirrelMail import file path, reported by Squirt1e, Atum, N0b0dy, and Gh0u1L5.

This version is considered stable and we recommend to update all productive installations of Roundcube with it. Please do backup your data before updating!
https://github.com/roundcube/roundcubem ... /tag/1.7.5

[Ghoste]

Hi Ralph, did you perform a manual update for Roundcube? What is the procedure? I want to make sure we don't break anything in KeyHelp.

[Alexander]

Ich mach morgen einen Patch fertig. / @Ghoste: I will prepare a patch tomorrow for easy installation via the Patch Manager.