CVE-2026-114723

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 allows the ImageMagick resource limits to be bypassed during thumbnail generation. When rcubeimage falls back to GD, the available-memory check was applied only on Windows, so on other platforms a crafted image with large dimensions was...

CVE-2026-114722

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a CSS scoping bypass in HTML messages. rcubeutils::modcssstyles did not treat an at-rule prologue such as @layer a; as a selector boundary, and did not handle selectors beginning with ::, so selectors following an at-rule were...

CVE-2026-114722

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a CSS scoping bypass in HTML messages. rcubeutils::modcssstyles did not treat an at-rule prologue such as @layer a; as a selector boundary, and did not handle selectors beginning with ::, so selectors following an at-rule were...

CVE-2026-114722

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a CSS scoping bypass in HTML messages. rcubeutils::modcssstyles did not treat an at-rule prologue such as @layer a; as a selector boundary, and did not handle selectors beginning with ::, so selectors following an at-rule were...

CVE-2026-114722

Roundcube Webmail versions before 1.6.20 and 1.7.x before 1.7.5 are vulnerable to a CSS scoping bypass within HTML messages. The root cause lies in the rcube_utils::mod_css_styles() function, which fails to recognize at-rule prologues (e.g., @layer a;) as selector boundaries and does not handle s...

CVE-2026-114722

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a CSS scoping bypass in HTML messages. rcubeutils::modcssstyles did not treat an at-rule prologue such as @layer a; as a selector boundary, and did not handle selectors beginning with ::, so selectors following an at-rule were...

EUVD-2026-107887

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a CSS scoping bypass in HTML messages. rcubeutils::modcssstyles did not treat an at-rule prologue such as @layer a; as a selector boundary, and did not handle selectors beginning with ::, so selectors following an at-rule were...

CVE-2026-114721

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 allows the disabledactions configuration setting to be bypassed. The check compared only the action name as requested, so a remote authenticated attacker could reach an action listed in disabledactions by requesting it through its deprecated...

CVE-2026-114721

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 allows the disabledactions configuration setting to be bypassed. The check compared only the action name as requested, so a remote authenticated attacker could reach an action listed in disabledactions by requesting it through its deprecated...

CVE-2026-114721

Roundcube Webmail versions before 1.6.20 and 1.7.x before 1.7.5 are vulnerable to a bypass of the disabled_actions configuration setting. The root cause is that the software only compared the requested action name, allowing a remote authenticated attacker to access restricted actions by using dep...

EUVD-2026-107886

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 allows the disabledactions configuration setting to be bypassed. The check compared only the action name as requested, so a remote authenticated attacker could reach an action listed in disabledactions by requesting it through its deprecated...

CVE-2026-114721

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 allows the disabledactions configuration setting to be bypassed. The check compared only the action name as requested, so a remote authenticated attacker could reach an action listed in disabledactions by requesting it through its deprecated...

CVE-2026-114720

Roundcube Webmail versions before 1.6.20 and 1.7.x before 1.7.5 are vulnerable to an IMAP command injection vulnerability. A remote authenticated attacker can exploit this by injecting CRLF sequences into the _flag parameter of the mail/mark action , allowing for the execution of arbitrary IMAP c...

CVE-2026-114720

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in th...

EUVD-2026-107885

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in th...

CVE-2026-114720

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in th...

CVE-2026-114720

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in th...

CVE-2026-114720

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in th...

CVE-2026-114719

Roundcube Webmail versions before 1.6.20 and 1.7.x before 1.7.5 are vulnerable to a CSRF validation bypass in the mark-as-junk action of the markasjunk plugin. The flaw occurs because the plugin reads the _uid parameter from POST data but passes it to rcmail::get_uids() without constraining the i...

CVE-2026-114719

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a CSRF validation bypass in the mark-as-junk action of the markasjunk plugin. The plugin read the uid parameter from POST data but passed it to rcmail::getuids without constraining the input mode, so values re-read inside that...