CRLF injection in Roundcube Webmail - #VU124138
Published: March 19, 2026 / Updated: March 19, 2026
Vulnerability identifier: #VU124138
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-93
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Roundcube
Affected software:
Roundcube Webmail
Roundcube Webmail
Detailed vulnerability description
The vulnerability allows a remote user to perform IMAP command injection and bypass CSRF protections.
The vulnerability exists due to improper input validation in mail search functionality when handling search queries. A remote user can send a specially crafted search request containing malicious IMAP commands to execute arbitrary commands on the IMAP server and bypass CSRF restrictions.
Remediation
Install security update from vendor's website.