CVE-2026-114726
CVSS Score
5.8
EPSS Score
0.0%
EPSS Percentile
0th
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”.
| CWE | CWE-99 |
| Vendor | roundcube |
| Product | webmail |
| Published | Oct 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None
Affected Versions
Roundcube / Webmail
1.6.0 < 1.6.20 1.7.0 < 1.7.5
References
bugs.debian.org: https://bugs.debian.org/1151279 github.com: https://github.com/roundcube/roundcubemail/commit/d3a35545fdaf72b02a9a4d670064895488e9d9d0 roundcube.net: https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5 github.com: https://github.com/roundcube/roundcubemail/releases/tag/1.7.5 github.com: https://github.com/roundcube/roundcubemail/releases/tag/1.6.20 github.com: https://github.com/roundcube/roundcubemail/commit/3a136465c965776a5f636587187626985dae4f3b