EUVD-2026-43747

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, an infinite loop was discovered in the TNEF decoder, which may lead to denial of service upon opening an email with a TNEF attachment...

EUVD-2026-43749

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, 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. NOTE: this issue exists because of insufficient fixes for...

EUVD-2026-43751

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the password plugin of the Roundcube Webmail was subject to username spoofing via session data, which could lead to account takeover...

EUVD-2026-43745

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, the TNEF decoder was subject to denial of service via a crafted compressed-RTF size...

CVE-2026-62641

A flaw was found in Roundcube Webmail. The TNEF Transport Neutral Encapsulation Format decoder, which handles winmail.dat files, is vulnerable to a denial of service. A remote attacker could send a specially crafted compressed-RTF Rich Text Format file, causing the decoder to consume excessive...

CVE-2026-54432

A flaw was found in Roundcube Webmail. This Stored Cross-Site Scripting XSS vulnerability arises from improper escaping of the attachment MIME type on the attachment-validation warning page. A remote attacker could exploit this by sending a specially crafted attachment, potentially leading to the...

CVE-2026-62642

A flaw was found in Roundcube Webmail. A remote attacker could exploit an infinite loop vulnerability in the TNEF Transport Neutral Encapsulation Format decoder by sending a specially crafted email with a TNEF attachment. This could lead to a denial of service, making the webmail service...

CVE-2026-62644

A flaw was found in the password plugin of Roundcube Webmail. A remote attacker with low privileges could exploit a username spoofing vulnerability by manipulating session data. This could lead to an account takeover, allowing the attacker to gain unauthorized access to a user's webmail account...

CVE-2026-62643

A flaw was found in Roundcube Webmail. Insufficient sanitization of Cascading Style Sheets CSS within HTML email messages allows a remote attacker to perform Server-Side Request Forgery SSRF or disclose sensitive information. This vulnerability occurs when stylesheet links point to local network...

CVE-2026-54433

A flaw was found in Roundcube Webmail. A remote attacker could exploit a Stored Cross-Site Scripting XSS vulnerability by sending a specially crafted plain-text email message. When the victim opens or previews this message, attacker-controlled JavaScript executes within their authenticated sessio...

CVE-2026-54432

Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2 allows Stored Cross-Site Scripting XSS. The issue occurs because the attachment MIME type is not properly escaped on the attachment-validation warning page...

CVE-2026-54433

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting XSS via a crafted plain-text email message. The attacker-controlled JavaScript executes within the victim's authenticated session simply by opening or previewing the message zero-click...

CVE-2026-54433

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting XSS via a crafted plain-text email message. The attacker-controlled JavaScript executes within the victim's authenticated session simply by opening or previewing the message zero-click...

CVE-2026-54432

Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2 allows Stored Cross-Site Scripting XSS. The issue occurs because the attachment MIME type is not properly escaped on the attachment-validation warning page...

CVE-2026-54432

Roundcube Webmail affected: versions before 1.6.17 and 1.7.x before 1.7.2 are vulnerable to a Stored XSS flaw. Root cause: the attachment MIME type is not properly escaped on the attachment-validation warning page, enabling script execution within a victim’s session when an email is viewed. Affec...

CVE-2026-54432

Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2 allows Stored Cross-Site Scripting XSS. The issue occurs because the attachment MIME type is not properly escaped on the attachment-validation warning page...

CVE-2026-54432

Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2 allows Stored Cross-Site Scripting XSS. The issue occurs because the attachment MIME type is not properly escaped on the attachment-validation warning page...

CVE-2026-54432

Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2 allows Stored Cross-Site Scripting XSS. The issue occurs because the attachment MIME type is not properly escaped on the attachment-validation warning page...

CVE-2026-54433

CVE-2026-54433 affects Roundcube Webmail prior to 1.6.17 and 1.7.x prior to 1.7.2. It is a Stored XSS vulnerability that allows attacker-controlled JavaScript to execute within the victim’s authenticated session simply by opening or previewing a crafted plain-text email (zero-click). Fedora advis...

CVE-2026-54433

In Roundcube Webmail before 1.6.17 and 1.7.x before 1.7.2, there is Stored Cross-Site Scripting XSS via a crafted plain-text email message. The attacker-controlled JavaScript executes within the victim's authenticated session simply by opening or previewing the message zero-click...