DEBIAN-CVE-2026-114725

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability. rcmailsendmail stripped newline characters only from the Subject and Organization headers, leaving other header values taken from request parameters unsanitized, so a remote authenticated...

DEBIAN-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...

DEBIAN-CVE-2026-114726

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability in the Bounce resend action. rcubemime::decodeaddresslist did not strip control characters from the decoded display name, so a received message whose From display-name carries CRLF sequence...

DEBIAN-CVE-2026-114724

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 contains an object injection primitive in rcubesession::unserialize. A session key prefixed with “!” was treated as having no value, and the reconstructed serialized string was emitted with a key but no corresponding value, desynchronizing th...

DEBIAN-CVE-2026-114728

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a remote content blocking bypass in the handling of FuncIRI attributes. rcubewashtml detected the CSS url token with a pattern that enumerated only some of its escaped spellings, so values using other CSS escape sequences, for...

DEBIAN-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-2026-114723

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-2026-114724

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 contains an object injection primitive in rcubesession::unserialize. A session key prefixed with “!” was treated as having no value, and the reconstructed serialized string was emitted with a key but no corresponding value, desynchronizing th...

CVE-2026-114725

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability. rcmailsendmail stripped newline characters only from the Subject and Organization headers, leaving other header values taken from request parameters unsanitized, so a remote authenticated...

CVE-2026-114728

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a remote content blocking bypass in the handling of FuncIRI attributes. rcubewashtml detected the CSS url token with a pattern that enumerated only some of its escaped spellings, so values using other CSS escape sequences, for...

CVE-2026-114726

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability in the Bounce resend action. rcubemime::decodeaddresslist did not strip control characters from the decoded display name, so a received message whose From display-name carries CRLF sequence...

CVE-2026-114727

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 passes potentially unsafe content into ImageMagick when resizing images. SVG and EPS were accepted as valid image types for contact photo upload and conversion, and both formats can reference external resources and invoke ImageMagick delegate...

DEBIAN-CVE-2026-114718

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a cross-site scripting vulnerability in the password plugin. Error text returned by a password driver was concatenated into the message presented to the user without HTML escaping, so a backend able to influence that text, such...

DEBIAN-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...

DEBIAN-CVE-2026-114716

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability. rcmailsendmail::extractinlineimages used the media type taken from an inline image data URI without validating it, so a remote authenticated attacker could inject arbitrary MIME part heade...

DEBIAN-CVE-2026-114717

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability when a message is forwarded as an attachment. The subject of the forwarded message was used verbatim to generate the attachment name, so a received message whose subject contains CRLF...

DEBIAN-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...

DEBIAN-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...

CVE-2026-114718

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a cross-site scripting vulnerability in the password plugin. Error text returned by a password driver was concatenated into the message presented to the user without HTML escaping, so a backend able to influence that text, such...