CVE Watch22 oct 2026

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. rcmail_sendmail::extract_inline

CVSS

8.5

Alto

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 22 oct 2026 · Última mod.: 22 oct 2026 · CWE-99

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability. rcmail_sendmail::extract_inline_images() used the media type taken from an inline image data URI without validating it, so a remote authenticated attacker could inject arbitrary MIME part headers into the outgoing message by placing CRLF sequences in that media type. Upstream fixed this in the commit “Fix mail header injection via media type in an inline image data URI”, which validates the media type with rcube_mime::is_mimetype_valid().

Referencias oficiales

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