CVE-2026-113386
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 are affected by IMAP command injection. A remote authenticated attacker can exploit this via CRLF sequences injected into the _uid parameter of the mail/headers and mail/viewsource actions to execute arbitrary IMAP commands.
| CWE | CWE-93 |
| Vendor | roundcube |
| Product | webmail |
| Published | Oct 20, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
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/004adaaeca4f6799715a54d12e3f657f19efcc9a 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/f62879defc0330ae240c72b83b2d00a8ab337447 github.com: https://github.com/roundcube/roundcubemail/commit/bf5bc0266a8cd16be6b640409e64a6c6c2705049