CVE-2026-114726: medium-severity vulnerability in Roundcube Webmail
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.8epss 0.4%
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. rcube_mime::decode_address_list() did not strip control characters from the decoded display name, so a received message whose From display-name carries CRLF sequences in an encoded word could inject arbitrary headers into the message emitted when the user bounces it. Upstream fixed this in the commit “Fix mail header injection via the From display-name in the Bounce (resend) action”.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Affected products
Roundcube · WebmailRelated CVEs — Roundcube Webmail
In the same product, most dangerous first.
References
https://bugs.debian.org/1151279https://github.com/roundcube/roundcubemail/commit/3a136465c965776a5f636587187626985dae4f3bhttps://github.com/roundcube/roundcubemail/commit/d3a35545fdaf72b02a9a4d670064895488e9d9d0https://github.com/roundcube/roundcubemail/releases/tag/1.6.20https://github.com/roundcube/roundcubemail/releases/tag/1.7.5https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5