CVE-2026-114716

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-114716
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-22 02:16:59 UTC
Updated2026-10-22 02:16:59 UTC
DescriptionRoundcube 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().

Risk And Classification

Primary CVSS: v3.1 8.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N

Problem Types: CWE-99 | CWE-99 CWE-99 Improper Control of Resource Identifiers ('Resource Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.5HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N
3.1CNACVSS8.5HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Roundcube Webmail affected 1.6.0 1.6.20 semver Not specified
CNA Roundcube Webmail affected 1.7.0 1.7.5 semver Not specified

References

ReferenceSourceLinkTags
github.com/roundcube/roundcubemail/commit/adb9b9b3fd43e30af1c166b7949472... [email protected] github.com
roundcube.net/news/2026/10/19/security-updates-1.6.20-and-1.7.5 [email protected] roundcube.net
bugs.debian.org/1151279 [email protected] bugs.debian.org
github.com/roundcube/roundcubemail/releases/tag/1.7.5 [email protected] github.com
github.com/roundcube/roundcubemail/releases/tag/1.6.20 [email protected] github.com
github.com/roundcube/roundcubemail/commit/7f3cc9cacb16cb3ab047fe8e3cba81... [email protected] github.com
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