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[Roundcube Announce] Security updates 1.7.4 and 1.6.19 released
by Aleksander Machniak 06 Sep '26

06 Sep '26

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 CSS declaration smuggling via un-encoded ampersand emission, reported by Zach Hanley of Horizon3.ai - Fix CSS property injection via body `background` attribute, reported by zenithhostingevan - Fix email header injection via bare CR in the subject field, reported by CVE-Hunter-Leo - Fix email header injection via C-escape \r in the recipient display name, reported by dogeshark - Fix email header injection via identity's organization field, reported by dogeshark - Fix zero-click stored XSS via TNEF MIME tag injection in the attachment URL, reported by nakko - Fix XSS in the HTML editor using text/enriched part content, reported by Joshua Rogers - Fix cross-user access in contact group membership (add/remove) in the SQL address book, reported by Joshua Rogers - Fix is_local_url() bypass via trailing-dot FQDN in stylesheet URL, reported by nept1337 - Fix remote content blocking bypass via CSS escapes in FuncIRI attributes, reported by neoxed - Fix remote-content blocker bypass via SVG SMIL src animation - Fix SSRF bypass in Roundcube CSS proxy via hexadecimal IPv6-mapped IPv4 addresses, reported by faceless0x7 and Harish Annavisamy See the full changelogs in the release notes on the Github download pages for the updated versions. https://github.com/roundcube/roundcubemail/releases/tag/1.7.4 https://github.com/roundcube/roundcubemail/releases/tag/1.6.19 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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Security updates 1.7.3 and 1.6.18 released
by Aleksander Machniak 27 Aug '26

27 Aug '26

Note: Message originally sent on 2026-08-09, but not delivered because of the mailing list issues. 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: - 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 See the full changelogs in the release notes on the Github download pages for the updated versions. https://github.com/roundcube/roundcubemail/releases/tag/1.7.3 https://github.com/roundcube/roundcubemail/releases/tag/1.6.18 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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Security updates 1.7.2 and 1.6.17 released
by Aleksander Machniak 05 Jul '26

05 Jul '26

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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Proposal: Send Later plugin for Roundcube
by Piotr Chyżyński 30 Jun '26

30 Jun '26

2 1

disable the new MouseOverMenue
by aschwab＠schwartech.de 17 Jun '26

17 Jun '26

Dear all, in the newest Version a MouseOverMenue was integrated. For my usual workflow it bothers me quite a bit so I was searching were to disable it but could not find the option. Neither in the "settings" menue nor in the "config.inc.php" Does anybody know where to disable this new MouseOverMenue? Best, Arne

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date format question
by maintenance＠clearlytahoe.com 14 Jun '26

14 Jun '26

Hello, I'm a employee at Clearly Tahoe kayak rentals around Tahoe lake in California. I was wondering is there a way to format the date to reflect the local customs for presenting it (mm/dd/yy)? I did see that you can change the format for how it looks but not necessarily change the placement of day/month/year values. Please let me know is it possible to change the date format to month/day/year and where to do it since _settings>preferences>user interface_ deals only with the visual aspect not the actual formatting of the date. will appreciate any input and/or guidance how to address this. thank you, Radoslaw Jeziorski maintenance coordinator

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Security updates 1.7.1 and 1.6.16 released
by Aleksander Machniak 24 May '26

24 May '26

Here's the same message with corrected subject. Sorry about that. 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 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 See the full changelogs in the release notes on the Github download pages for the updated versions 1.7.1 and 1.6.16. https://github.com/roundcube/roundcubemail/releases/tag/1.7.1 https://github.com/roundcube/roundcubemail/releases/tag/1.6.16 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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Security updates 1.5.13 and 1.6.13 released
by Aleksander Machniak 24 May '26

24 May '26

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 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 See the full changelogs in the release notes on the Github download pages for the updated versions 1.7.1 and 1.6.16. https://github.com/roundcube/roundcubemail/releases/tag/1.7.1 https://github.com/roundcube/roundcubemail/releases/tag/1.6.16 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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Roundcube Webmail 1.7.0 released
by Aleksander Machniak 11 May '26

11 May '26

This is the stable release of the next major version 1.7 of Roundcube Webmail. After almost four years of development we introduce a few breaking changes, some new features, and bring support for recent PHP versions. With automated code style and quality checks, removed code bloat and updated dependencies, we hope for even more codebase quality. Some noteworthy changes are: - Mandatory `public_html/` entry-point for HTTP servers, protecting all installations better. - Improved OAuth2/OIDC support (e.g. support for OIDC discovery, OIDC logout). - Markdown mail rendering and composing. - A quick actions mouse-over menu on the messages list. - Advanced mail search syntax. ## Breaking Changes - Dropped support for PHP < 8.1. - Dropped support for Internet Explorer. - Dropped support for MS SQL Server and Oracle. - `public_html/` entry-point made mandatory, all static resources are served via `public_html/static.php`. - Removed `apc` cache driver (replaced by `apcu` cache driver). - Changed `smtp_log` option default value to `false`. - Removed `contact_search_name` option in favor of `contactlist_name_template`. - Replaced session property `changed` by `expires_at`. - Removed the (insecure) virtualmin password driver. This release is considered stable and we encourage you to update your productive installations after carefully testing the upgrade scenario. With the release of Roundcube 1.7.0, the previous stable release branch 1.6.x changes into an LTS (low maintenance) mode which means it will only receive important security updates. The 1.5.x series is no longer supported and maintained. And don't forget to backup your data before installing it! You can download it from https://roundcube.net Cheers, Alec

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Security updates 1.6.15 and 1.5.15 (and 1.7-rc6) released
by Aleksander Machniak 29 Mar '26

29 Mar '26

We just published security updates to the 1.6 and 1.5 LTS versions of Roundcube Webmail, as well as a release candidate for coming 1.7. It provides fixes to some regressions introduced in the previous release as well a recently reported security vulnerability. ## Security fixes - SVG Animate FUNCIRI Attribute Bypass — Remote Image Loading via fill/filter/stroke, reported by class_nzm. 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-rc6 - https://github.com/roundcube/roundcubemail/releases/tag/1.6.15 - https://github.com/roundcube/roundcubemail/releases/tag/1.5.15 We strongly recommend to update your productive installations of Roundcube with this new versions. -- Alec

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