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. rcmail_sendmail stripped newline characters only from the Subject and Organization headers, leaving other header values taken from request parameters unsanitized, so a remote authenticated attacker could inject arbitrary headers into an outgoing message via the References, In-Reply-To, Message-ID and From parameters. Upstream fixed this in the commit “Fix mail header injection via References/In-Reply-To/Message-ID/From parameters”, which normalizes whitespace in every string header value.

CVSS vector

Tham khảo

• https://bugs.debian.org/1151279
• https://github.com/roundcube/roundcubemail/commit/79adcfc0c48012bbbe930278471425027fd7331c
• https://github.com/roundcube/roundcubemail/commit/acd32a86f631dd6dcda8ac3ec7bd9ba4d4c0c117
• https://github.com/roundcube/roundcubemail/releases/tag/1.6.20
• https://github.com/roundcube/roundcubemail/releases/tag/1.7.5
• https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5

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