Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5 is affected by an IMAP command injection vulnerability.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Specific setups only
- Fix
- Fixed in 1.6.20, 1.7.5
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Roundcube Webmail
From 1.6.0 · fixed in 1.6.20; From 1.7.0 · fixed in 1.7.5
References 6
bugs.debian.org
GitHub · roundcube/roundcubemail
roundcube.net
Questions about CVE-2026-114720
What does this mean?
The _flag parameter of Roundcube's mail/mark action does not strip CRLF sequences, so an attacker-supplied value can inject extra IMAP commands into the server session. The advisory describes this as IMAP command injection via CRLF in that parameter.Source: roundcube.net
Am I affected, and how do I check?
Roundcube Webmail 1.6.x before 1.6.20 and 1.7.x before 1.7.5 are affected. To check, look at the Roundcube version shown in the footer or the program/includes version file of your installation.Source: roundcube.net
What should I do about it?
Upgrade to Roundcube Webmail 1.6.20 if you run the 1.6 branch, or to 1.7.5 if you run the 1.7 branch. Both versions are listed as fixed releases.Source: roundcube.net
Is it being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data