Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability when a message is forwarded as an attachment. The subject of the forwarded message was used verbatim to generate the attachment name, so a received message whose subject contains CRLF sequences could inject arbitrary MIME part headers into the outgoing message. Upstream fixed this in the commit “Fix mail header injection via subject of a message forwarded as attachment”, which collapses whitespace in the generated name.
Metrics
Affected Vendors & Products
References
History
Thu, 22 Oct 2026 07:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Title | Mail Header Injection via Email Forwarding in Roundcube Webmail |
Thu, 22 Oct 2026 01:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability when a message is forwarded as an attachment. The subject of the forwarded message was used verbatim to generate the attachment name, so a received message whose subject contains CRLF sequences could inject arbitrary MIME part headers into the outgoing message. Upstream fixed this in the commit “Fix mail header injection via subject of a message forwarded as attachment”, which collapses whitespace in the generated name. | |
| First Time appeared |
Roundcube
Roundcube webmail |
|
| Weaknesses | CWE-99 | |
| CPEs | cpe:2.3:a:roundcube:webmail:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Roundcube
Roundcube webmail |
|
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: mitre
Published: 2026-10-22T01:21:14.794Z
Updated: 2026-10-22T01:21:14.794Z
Reserved: 2026-10-22T01:21:14.433Z
Link: CVE-2026-114717
No data.
Status : Awaiting Analysis
Published: 2026-10-22T02:16:59.223
Modified: 2026-10-22T16:45:49.550
Link: CVE-2026-114717
No data.