CVE-2026-35541

A flaw was found in Roundcube Webmail. Incorrect password comparison within the password plugin can lead to a type confusion vulnerability. This allows an attacker to change a user's password without needing to know the old password, potentially leading to unauthorized access to the user's webmai...

CVE-2026-35537

A flaw was found in Roundcube Webmail. Unauthenticated attackers can exploit an unsafe deserialization vulnerability in the redis/memcache session handler. This allows for arbitrary file write operations by crafting malicious session data. The primary impact is the ability to write files to the...

EUVD-2026-18581

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. XSS exists because of insufficient HTML attachment sanitization in preview mode. A victim must preview a text/html attachment...

EUVD-2026-18579

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsanitized IMAP SEARCH command arguments could lead to IMAP injection or CSRF bypass during mail search...

GHSA-5HF6-CRG4-FG59 Roundcube: Bypass of remote image blocking via crafted BODY background attribute

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed via a crafted background attribute of a BODY element in an e-mail message. This may lead to information disclosure or access-control bypass...

GHSA-W846-74JR-76CV Roundcube Webmail: Remote image blocking feature can be bypassed via SVG content in an e-mail message

An issue was discovered in Roundcube Webmail before 1.5.15 and 1.6.15. The remote image blocking feature can be bypassed via SVG content in an e-mail message. This may lead to information disclosure or access-control bypass. This involves the animate element with attributeName=fill/filter/stroke...

Roundcube Webmail: Remote image blocking feature can be bypassed via SVG content in an e-mail message

An issue was discovered in Roundcube Webmail before 1.5.15 and 1.6.15. The remote image blocking feature can be bypassed via SVG content in an e-mail message. This may lead to information disclosure or access-control bypass. This involves the animate element with attributeName=fill/filter/stroke...

Roundcube Webmail: Insufficient CSS sanitization in HTML e-mail messages

An issue was discovered in Roundcube Webmail 1.6.0 before 1.6.14. 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...

Roundcube Webmail: Unsanitized IMAP SEARCH command arguments

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsanitized IMAP SEARCH command arguments could lead to IMAP injection or CSRF bypass during mail search...

Roundcube Webmail: Incorrect password comparison in the password plugin

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Incorrect password comparison in the password plugin could lead to type confusion that allows a password change without knowing the old password...

EUVD-2026-18575

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsafe deserialization in the redis/memcache session handler may lead to arbitrary file write operations by unauthenticated attackers via crafted session data...

EUVD-2026-18585

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Incorrect password comparison in the password plugin could lead to type confusion that allows a password change without knowing the old password...

Roundcube Webmail: Insufficient HTML attachment sanitization in preview mode

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. XSS exists because of insufficient HTML attachment sanitization in preview mode. A victim must preview a text/html attachment...

Roundcube Webmail: Unsafe deserialization in the redis/memcache session handler

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsafe deserialization in the redis/memcache session handler may lead to arbitrary file write operations by unauthenticated attackers via crafted session data...

Roundcube Webmail: Bypass of remote image blocking via SVG content (with animate attributes) in an e-mail message

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed via SVG content with animate attributes in an e-mail message. This may lead to information disclosure or access-control bypass...

GHSA-RXJ3-RRWM-PJ4R Roundcube Webmail: Unsafe deserialization in the redis/memcache session handler

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsafe deserialization in the redis/memcache session handler may lead to arbitrary file write operations by unauthenticated attackers via crafted session data...

GHSA-46PV-MJ2G-93GH Roundcube Webmail: Incorrect password comparison in the password plugin

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Incorrect password comparison in the password plugin could lead to type confusion that allows a password change without knowing the old password...

GHSA-VXG2-HHGR-37FX Roundcube Webmail: Insufficient CSS sanitization in HTML e-mail messages

An issue was discovered in Roundcube Webmail 1.6.0 before 1.6.14. 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...

GHSA-J2G6-8RVG-7MF6 Roundcube Webmail: Bypass of remote image blocking via SVG content (with animate attributes) in an e-mail message

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. The remote image blocking feature can be bypassed via SVG content with animate attributes in an e-mail message. This may lead to information disclosure or access-control bypass...

GHSA-8JR8-V43G-5C57 Roundcube Webmail: Unsanitized IMAP SEARCH command arguments

An issue was discovered in Roundcube Webmail before 1.5.14 and 1.6.14. Unsanitized IMAP SEARCH command arguments could lead to IMAP injection or CSRF bypass during mail search...