Roundcube Webmail Project News2026-09-06T10:42:30+00:00https://roundcube.netRoundcube Webmail Dev TeamSecurity updates 1.6.19 and 1.7.4 released2026-09-06T00:00:00+00:00https://roundcube.net/news/2026/09/06/security-updates-1.6.19-and-1.7.4<p>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.</p>
<h2 id="security-fixes">Security fixes</h2>
<ul>
<li>Fix CSS declaration smuggling via un-encoded ampersand emission, reported by Zach Hanley of Horizon3.ai</li>
<li>Fix CSS property injection via body <code class="language-plaintext highlighter-rouge">background</code> attribute, reported by zenithhostingevan</li>
<li>Fix email header injection via bare CR in the subject field, reported by CVE-Hunter-Leo</li>
<li>Fix email header injection via C-escape \r in the recipient display name, reported by dogeshark</li>
<li>Fix email header injection via identity’s organization field, reported by dogeshark</li>
<li>Fix zero-click stored XSS via TNEF MIME tag injection in the attachment URL, reported by nakko</li>
<li>Fix XSS in the HTML editor using text/enriched part content, reported by Joshua Rogers</li>
<li>Fix cross-user access in contact group membership (add/remove) in the SQL address book, reported by Joshua Rogers</li>
<li>Fix is_local_url() bypass via trailing-dot FQDN in stylesheet URL, reported by nept1337</li>
<li>Fix remote content blocking bypass via CSS escapes in FuncIRI attributes, reported by Wahab KHADIR</li>
<li>Fix remote-content blocker bypass via SVG SMIL src animation</li>
<li>Fix SSRF bypass in Roundcube CSS proxy via hexadecimal IPv6-mapped IPv4 addresses, reported by faceless0x7 and Harish Annavisamy</li>
</ul>
<p>See the full changelogs in the release notes on the Github download pages for the updated versions
<a href="https://github.com/roundcube/roundcubemail/releases/tag/1.6.19">1.6.19</a> and <a href="https://github.com/roundcube/roundcubemail/releases/tag/1.7.4">1.7.4</a>.</p>
<p>We strongly recommend to update all productive installations of Roundcube 1.6.x and 1.7.x with this new versions.</p>
Security updates 1.6.18 and 1.7.3 released2026-08-09T00:00:00+00:00https://roundcube.net/news/2026/08/09/security-updates-1.6.18-and-1.7.3<p>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.</p>
<h2 id="security-fixes">Security fixes</h2>
<ul>
<li>Add basic validation for content proxied by the css proxy</li>
<li>Fix SSRF bypass via specific local address URLs using 100.64.0.0/10 and fe80::/10 nets, reported by Dmytro Ivanenko</li>
<li>Fix SSRF filter bypass via various forms of nip.io/sslip.io hostnames evading is_local_url() check, reported by Milan Hoppe</li>
<li>Fix remote content blocking bypass via unclosed url() in a FuncIRI attribute, reported by Milan Hoppe</li>
<li>Fix LDAP filter injection via unescaped %u/%fu/%d substitution into the <code class="language-plaintext highlighter-rouge">search_filter</code>, reported by Milan Hoppe</li>
<li>Fix arbitrary Sieve script injection via a filter rule name bypassing <code class="language-plaintext highlighter-rouge">managesieve_disabled_actions</code>, reported by Milan Hoppe</li>
<li>Fix RCE via cmd_learn driver of markasjunk plugin, reported by nept1337</li>
<li>Fix IMAP command injection via mail search and LITERAL+ byte-count desynchronization, reported by Zach Hanley of Horizon3.ai</li>
<li>Fix password’s modoboa driver leak of an authentication token to a user-controlled host, reported by <a href="https://github.com/meifukun">meifukun</a></li>
<li>Fix stored XSS in “Add to address book” action, reported by Paulos Yibelo from <a href="https://pwn.ai">pwn.ai</a></li>
<li>Fix HTML/CSS sanitization bypass via SVG animate <code class="language-plaintext highlighter-rouge">by</code> attribute, reported by vectrain</li>
</ul>
<p>See the full changelogs in the release notes on the Github download pages for the updated versions
<a href="https://github.com/roundcube/roundcubemail/releases/tag/1.6.18">1.6.18</a> and <a href="https://github.com/roundcube/roundcubemail/releases/tag/1.7.3">1.7.3</a>.</p>
<p>We strongly recommend to update all productive installations of Roundcube 1.6.x and 1.7.x with this new versions.</p>
Security updates 1.6.17 and 1.7.2 released2026-07-05T00:00:00+00:00https://roundcube.net/news/2026/07/05/security-updates-1.6.17-and-1.7.2<p>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.</p>
<h2 id="security-fixes">Security fixes</h2>
<ul>
<li>Fix an infinite loop in TNEF (winmail.dat) decoder (#10193), reported by stafra.</li>
<li>Fix various vulnerabilities in the password plugin using session-injected username, reported by Glendaenri and peppersghost.</li>
<li>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).</li>
<li>Fix SSRF bypass via specific local address URLs - two new cases, reported by Leenear.</li>
<li>Fix zero-click stored XSS in plain-text rendering [CVE-2026-54433], reported by Bohdan Kurinnoy, Samsung R&D Institute Ukraine (SRUKR).</li>
<li>Fix DoS via crafted compressed-RTF size in the TNEF (winmail.dat) file, reported by h0rk1p.</li>
</ul>
<p>See the full changelogs in the release notes on the Github download pages for the updated versions
<a href="https://github.com/roundcube/roundcubemail/releases/tag/1.6.17">1.6.17</a> and <a href="https://github.com/roundcube/roundcubemail/releases/tag/1.7.2">1.7.2</a>.</p>
<p>We strongly recommend to update all productive installations of Roundcube 1.6.x and 1.7.x with this new versions.</p>
Security updates 1.6.16 and 1.7.1 released2026-05-24T00:00:00+00:00https://roundcube.net/news/2026/05/24/security-updates-1.6.16-and-1.7.1<p>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.</p>
<h2 id="security-fixes">Security fixes</h2>
<ul>
<li>Fix stored XSS/HTML/CSS injection in subject field of the draft restore dialog, reported by Anand Jogawade (zazy)</li>
<li>Fix CSS injection bypass in HTML sanitizer via SVG <code class="language-plaintext highlighter-rouge"><animate attributeName="style"></code>, reported by wooseokdotkim</li>
<li>Fix pre-auth SQL injection in virtuser_query plugin via preg_replace backslash escape bypass, reported by skull</li>
<li>Fix SSRF bypass via specific local address URLs</li>
<li>Fix local/private URL fetch bypass when remote resources were not allowed, reported by Orange Cyberdefense Vulnerability Disclosure Team</li>
<li>Fix bypass of remote image blocking via CSS var(), reported by Geame</li>
<li>Fix pre-auth arbitrary file delete via redis/memcache session poisoning bypass, reported by valent1</li>
<li>Fix code injection vulnerability - remove support for code evaluation in LDAP <code class="language-plaintext highlighter-rouge">autovalues</code> option, reported by Glendaenri</li>
</ul>
<p>See the full changelogs in the release notes on the Github download pages for the updated versions
<a href="https://github.com/roundcube/roundcubemail/releases/tag/1.6.16">1.6.16</a> and <a href="https://github.com/roundcube/roundcubemail/releases/tag/1.7.1">1.7.1</a>.</p>
<p>We strongly recommend to update all productive installations of Roundcube 1.6.x and 1.7.x with this new versions.</p>
Roundcube 1.7.0 released2026-05-10T00:00:00+00:00https://roundcube.net/news/2026/05/10/roundcube-1.7.0-released<p>This is the stable release of the next major version 1.7 of Roundcube Webmail.</p>
<p>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.</p>
<p>Some noteworthy changes are:</p>
<ul>
<li>Mandatory public_html/ entry-point for HTTP servers, protecting all installations better.</li>
<li>Improved OAuth2/OIDC support (e.g. support for OIDC discovery, OIDC logout).</li>
<li>Markdown mail rendering and composing.</li>
<li>A quick actions mouse-over menu on the messages list.</li>
<li>Advanced mail search syntax.</li>
</ul>
<p>Breaking Changes:</p>
<ul>
<li>Dropped support for PHP < 8.1.</li>
<li>Dropped support for Internet Explorer.</li>
<li>Dropped support for MS SQL Server and Oracle.</li>
<li>public_html/ entry-point made mandatory, all static resources are served via public_html/static.php.</li>
<li>Removed apc cache driver (replaced by apcu cache driver).</li>
<li>Changed smtp_log option default value to false.</li>
<li>Removed contact_search_name option in favor of contactlist_name_template.</li>
<li>Replaced session property changed by expires_at.</li>
<li>Removed the (insecure) virtualmin password driver.</li>
</ul>
<p>This release is considered stable and we encourage you to update your productive installations
after carefully testing the upgrade scenario. Download it from <a href="https://roundcube.net/download">roundcube.net</a>.</p>
<p>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.</p>
<p>See the full changelog in the <a href="https://github.com/roundcube/roundcubemail/releases/tag/1.7.0">release notes</a>
on the Github download page, but don’t forget about previous release canditate and beta releases.</p>
Security updates 1.7-rc6, 1.6.15 and 1.5.15 released2026-03-29T00:00:00+00:00https://roundcube.net/news/2026/03/29/security-updates-1.7-rc6-1.6.15-1.5.15<p>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.
They contain fixes for recently reported set of security vulnerabilities.</p>
<h2 id="security-fixes">Security fixes</h2>
<ul>
<li>SVG Animate FUNCIRI Attribute Bypass — Remote Image Loading via fill/filter/stroke, reported by class_nzm.</li>
</ul>
<p>See the full changelogs in the release notes on the Github download pages for the updated versions</p>
<ul>
<li><a href="https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc6">1.7-rc6</a></li>
<li><a href="https://github.com/roundcube/roundcubemail/releases/tag/1.6.15">1.6.15</a></li>
<li><a href="https://github.com/roundcube/roundcubemail/releases/tag/1.5.15">1.5.15</a>.</li>
</ul>
<p>We strongly recommend to update your productive installations of Roundcube with this new versions.</p>
Security updates 1.7-rc5, 1.6.14 and 1.5.14 released2026-03-18T00:00:00+00:00https://roundcube.net/news/2026/03/18/security-updates-1.7-rc5-1.6.14-1.5.14<p>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.
They contain fixes for recently reported set of security vulnerabilities.</p>
<h2 id="security-fixes">Security fixes</h2>
<ul>
<li>Fix pre-auth arbitrary file write via unsafe deserialization in redis/memcache session handler, reported by y0us.</li>
<li>Fix bug where a password could get changed without providing the old password, reported by flydragon777.</li>
<li>Fix IMAP Injection + CSRF bypass in mail search, reported by Martila Security Research Team.</li>
<li>Fix remote image blocking bypass via various SVG animate attributes, reported by nullcathedral.</li>
<li>Fix remote image blocking bypass via a crafted body background attribute, reported by nullcathedral.</li>
<li>Fix fixed position mitigation bypass via use of !important, reported by nullcathedral.</li>
<li>Fix XSS issue in a HTML attachment preview, reported by aikido_security.</li>
<li>Fix SSRF + Information Disclosure via stylesheet links to a local network hosts, reported by Georgios Tsimpidas (aka Frey), Security Researcher at https://i0.rs/.</li>
</ul>
<p>See the full changelogs in the release notes on the Github download pages for the updated versions</p>
<ul>
<li><a href="https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc5">1.7-rc5</a></li>
<li><a href="https://github.com/roundcube/roundcubemail/releases/tag/1.6.14">1.6.14</a></li>
<li><a href="https://github.com/roundcube/roundcubemail/releases/tag/1.5.14">1.5.14</a>.</li>
</ul>
<p>We strongly recommend to update your productive installations of Roundcube with this new versions.</p>
Roundcube 1.7 RC4 released2026-02-13T00:00:00+00:00https://roundcube.net/news/2026/02/13/roundcube-1.7-rc4-released<p>We just published the fourth release candidate for the next major version 1.7 of Roundcube webmail.</p>
<p>This release fixes two minor issues, it’s mostly published to fix a file permission problem in the previous release v1.7-rc3.</p>
<p>The changes are:</p>
<ul>
<li>Ensure correct file permissions when building a release.</li>
<li>Installer: Fix broken link to download the created configuration file (#10092)</li>
</ul>
<p>The tarballs can be downloaded <a href="https://roundcube.net/download/">from roundcube.net/download</a>.</p>
<p>Or directly from <a href="https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc4">the release page at github.com</a>.</p>
<p>We believe it is production ready, but we recommend to test it on a separate environment.</p>
<p>Migrate existing configs with either the <code class="language-plaintext highlighter-rouge">installto.sh</code> or the <code class="language-plaintext highlighter-rouge">update.sh</code> scripts.</p>
<p>And don’t forget to backup your data before installing it!</p>
Roundcube 1.7 RC3 released2026-02-09T00:00:00+00:00https://roundcube.net/news/2026/02/09/roundcube-1.7-rc3-released<p>We just published the third release candidate for the next major version 1.7 of Roundcube webmail.</p>
<p>This release fixes two security issues, and contains a few more fixes for several issues.</p>
<p>The security fixes are:</p>
<ul>
<li>Fix CSS injection vulnerability reported by CERT Polska.</li>
<li>Fix remote image blocking bypass via SVG content reported by nullcathedral.</li>
</ul>
<p>For the full changelog please see <a href="https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc3">the release page</a>.</p>
<p>The tarballs can be downloaded <a href="https://roundcube.net/download/">via roundcube.net</a>.</p>
<p>Or directly from <a href="https://github.com/roundcube/roundcubemail/releases/tag/1.7-rc3">the release page at github.com</a>.</p>
<p>We believe it is production ready, but we recommend to test it on a separate environment.</p>
<p>Migrate existing configs with either the <code class="language-plaintext highlighter-rouge">installto.sh</code> or the <code class="language-plaintext highlighter-rouge">update.sh</code> scripts.</p>
<p>And don’t forget to backup your data before installing it!</p>
Security updates 1.6.13 and 1.5.13 released2026-02-08T00:00:00+00:00https://roundcube.net/news/2026/02/08/security-updates-1.6.13-and-1.5.13<p>We just published security updates to the 1.6 and 1.5 LTS versions of Roundcube Webmail.
They both contain fixes for recently reported two security vulnerabilities.</p>
<h2 id="security-fixes">Security fixes</h2>
<ul>
<li>Fix CSS injection vulnerability reported by CERT Polska.</li>
<li>Fix remote image blocking bypass via SVG content reported by nullcathedral.</li>
</ul>
<p>See the full changelogs in the release notes on the Github download pages for the updated versions
<a href="https://github.com/roundcube/roundcubemail/releases/tag/1.6.13">1.6.13</a> and <a href="https://github.com/roundcube/roundcubemail/releases/tag/1.5.13">1.5.13</a>.</p>
<p>We strongly recommend to update all productive installations of Roundcube 1.6.x and 1.5.x with this new versions.</p>