Vulnerability Description
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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Roundcube | Webmail | >= 1.6.0, < 1.6.20 |
Related Weaknesses (CWE)
References
- https://bugs.debian.org/1151279Third Party Advisory
- https://github.com/roundcube/roundcubemail/commit/79adcfc0c48012bbbe930278471425PatchMailing List
- https://github.com/roundcube/roundcubemail/commit/acd32a86f631dd6dcda8ac3ec7bd9bPatch
- https://github.com/roundcube/roundcubemail/releases/tag/1.6.20Release Notes
- https://github.com/roundcube/roundcubemail/releases/tag/1.7.5Release Notes
- https://roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5Issue Tracking
FAQ
What is CVE-2026-114725?
CVE-2026-114725 is a vulnerability with a CVSS score of 5.0 (MEDIUM). 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,...
How severe is CVE-2026-114725?
CVE-2026-114725 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-114725?
Check the references section above for vendor advisories and patch information. Affected products include: Roundcube Webmail.