CVE-2026-74998

Roundcube Webmail versions before 1.6.18 and 1.7.x before 1.7.3 fail to validate CSS proxy responses, enabling XSS or information disclosure through MIME sniffing. CVSS 7.2 (HIGH), network-reachable with no privileges. No in-the-wild exploitation reported. Fix: upgrade to 1.6.18 or 1.7.3 (commits...

CVE-2026-74998

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, responses from the CSS Cascading Style Sheets proxy were not validated, which may result in information disclosure or XSS cross-site scripting via MIME sniffing...

EUVD-2026-60165

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, responses from the CSS Cascading Style Sheets proxy were not validated, which may result in information disclosure or XSS cross-site scripting via MIME sniffing...

CVE-2026-74997

Roundcube Webmail's markasjunk plugin cmd_learn driver allows RCE via crafted placeholder replacement values in versions before 1.6.18 and 1.7.x before 1.7.3. Fix: upgrade to 1.6.18 or 1.7.3. CVSS 8.8 (HIGH). Exploitation details not provided in documents.

CVE-2026-74997

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the cmdlearn driver of the markasjunk plugin is subject to remote code execution via crafted placeholder replacement values. This issue only affects Roundcube instances using the markasjunk plugin with its cmdlearn driver...

CVE-2026-74997

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the cmdlearn driver of the markasjunk plugin is subject to remote code execution via crafted placeholder replacement values. This issue only affects Roundcube instances using the markasjunk plugin with its cmdlearn driver...

EUVD-2026-60164

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the cmdlearn driver of the markasjunk plugin is subject to remote code execution via crafted placeholder replacement values. This issue only affects Roundcube instances using the markasjunk plugin with its cmdlearn driver...

PT-2026-76642

Name of the Vulnerable Software and Affected Versions Roundcube Webmail versions prior to 1.6.18 Roundcube Webmail versions 1.7.x prior to 1.7.3 Description An issue exists where mail search and LITERAL+ byte-count desynchronization can occur. This condition allows for IMAP command injection, whi...

PT-2026-76643

Name of the Vulnerable Software and Affected Versions Roundcube Webmail versions prior to 1.6.18 Roundcube Webmail versions 1.7.x prior to 1.7.3 Description An unclosed url in a FuncIRI attribute of an SVG image allows the evasion of remote image blocking. This flaw could potentially lead to...

PT-2026-76648

Name of the Vulnerable Software and Affected Versions Roundcube Webmail versions prior to 1.6.18 Roundcube Webmail versions 1.7.x prior to 1.7.3 Description An LDAP search filter injection exists due to unescaped %u, %fu, and %d substitutions. This flaw could allow an attacker to cause informatio...

PT-2026-76641

Name of the Vulnerable Software and Affected Versions Roundcube Webmail versions prior to 1.6.18 Roundcube Webmail versions 1.7.x prior to 1.7.3 Description Improper HTML/CSS sanitization of the by attribute within the SVG animate element allows for a remote image blocking bypass. This failure to...

PT-2026-76647

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, insufficient Cascading Style Sheets CSS sanitization in HTML e-mail messages may lead to SSRF or Information Disclosure, e.g., if stylesheet links point to local network hosts. This issue exists because of insufficient fixes for...

PT-2026-76649

In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, the modoboa driver of the password plugin could leak a Modoboa API authentication token to a user-controlled host via crafted session data. This issue only affects Roundcube instances using the password plugin with its modoboa driver...

Roundcube Webmail - Remote Code Execution

Roundcube Webmail before 1.5.10 and 1.6.x before 1.6.11 allows remote code execution by authenticated users because the from parameter in a URL is not validated in program/actions/settings/upload.php, leading to PHP Object Deserialization. id: CVE-2025-49113 info: name: Roundcube Webmail - Remote...

Exploit for Cross-site Scripting in Roundcube Webmail

CVE-2026-54433: Roundcube plain-text email stored XSS !Explo...

Updated roundcubemail packages fix 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, Fix SSRF filter bypass via various forms of nip.io/sslip.io hostnames evading islocalurl check Fix remote content blocking bypass via unclosed url in a...

[SECURITY] [DLA 4693-1] roundcube security update

Debian LTS Advisory DLA-4693-1 [email protected] https://www.debian.org/lts/security/ Guilhem Moulin July 22, 2026 https://wiki.debian.org/LTS Package : roundcube Version : 1.4.15+dfsg.1-1+deb11u10 1.6.5+dfsg-1+deb12u10 CVE ID : CVE-2026-54432 CVE-2026-54433 CVE-2026-62641 CVE-2026-6264...

Debian dsa-6391 : roundcube - security update

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6391 advisory. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6391-1 [email protected] https://www.debian.org/securit...

[SECURITY] Fedora 43 Update: roundcubemail-1.6.17-1.fc43

RoundCube Webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client, including MIME support, address book, folder manipulation, message searching and spell checking. RoundCube Webmail is written in...

[SECURITY] Fedora 44 Update: roundcubemail-1.7.2-1.fc44

RoundCube Webmail is a browser-based multilingual IMAP client with an application-like user interface. It provides full functionality you expect from an e-mail client, including MIME support, address book, folder manipulation, message searching and spell checking. RoundCube Webmail is written in...