Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by a mail header injection vulnerability. rcmail_sendmail::extract_inline_images() used the media type taken from an inline image data URI without validating it, so a remote authenticated attacker could inject arbitrary MIME part headers into the outgoing message by placing CRLF sequences in that media type. Upstream fixed this in the commit “Fix mail header injection via media type in an inline image data URI”, which validates the media type with rcube_mime::is_mimetype_valid().
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
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. rcmail_sendmail::extract_inline_images() used the media type taken from an inline image data URI without validating it, so a remote authenticated attacker could inject arbitrary MIME part headers into the outgoing message by placing CRLF sequences in that media type. Upstream fixed this in the commit “Fix mail header injection via media type in an inline image data URI”, which validates the media type with rcube_mime::is_mimetype_valid(). | |
| 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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Projects
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Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-10-22T01:17:45.277Z
Reserved: 2026-10-22T01:17:44.860Z
Link: CVE-2026-114716
No data.
Status : Received
Published: 2026-10-22T02:16:59.077
Modified: 2026-10-22T02:16:59.077
Link: CVE-2026-114716
No data.
OpenCVE Enrichment
No data.
Weaknesses