Bug 2558661 (CVE-2026-114720) - CVE-2026-114720 roundcubemail: roundcubemail: Arbitrary IMAP command execution via CRLF injection in the _flag parameter
Summary: CVE-2026-114720 roundcubemail: roundcubemail: Arbitrary IMAP command executio...
Keywords:
Status: NEW
Alias: CVE-2026-114720
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2558886 2558890
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-22 01:43 UTC by OSIDB Bzimport
Modified: 2026-10-22 11:25 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-10-22 01:43:49 UTC 
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.
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