Is CVE-2026-113386 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-113386?

CVE-2026-113386 has a CVSS v3 severity of HIGH (7.1).

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CVE-2026-113386

Description

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.