CVE-2026-114720: Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this…

PriorityP352high7.1CVSS 3.1

AVNACLPRLUINSUCLIHAN

EPSS

0.80%

56.3th percentile

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability. A remote authenticated attacker can exploit this via CRLF sequences injected into the _flag parameter of the mail/mark action to execute arbitrary IMAP commands. Upstream fixed this in the commit “Fix IMAP command injection via CRLF in `_flag` parameter of mail/mark action”, which rejects flags containing control, whitespace and IMAP-special characters.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
roundcube	webmail	>= 1.6.0 < 1.6.20	1.6.20
roundcube	webmail	>= 1.7.0 < 1.7.5	1.7.5

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