Is CVE-2026-114720 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-114720 being exploited in the wild.

How severe is CVE-2026-114720?

High severity, with a CVSS score of 7.1, published 22 October 2026.

Which products and versions are affected?

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5.

Is there a fix for CVE-2026-114720?

Yes: fixed in Roundcube Webmail 1.6.20, 1.7.5. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-114720 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-114720?

Check whether you run Roundcube Webmail at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-114720: Roundcube Webmail IMAP command injection via CRLF in flag parameter

CVE-2026-114720 · Severity: high · CVSS 7.1 · Published 2026-10-22

Roundcube Webmail is a web-based email client that allows users to access their mail through a browser. An authenticated attacker can inject arbitrary IMAP commands by embedding CRLF (carriage return and line feed) sequences into email flag parameters, potentially allowing them to read, delete, or manipulate emails that the attacker should not have access to.

Technologies: Roundcube Webmail. Vendors: Roundcube.

Quick answers

Is CVE-2026-114720 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-114720 being exploited in the wild.
How severe is CVE-2026-114720?: High severity, with a CVSS score of 7.1, published 22 October 2026.
Which products and versions are affected?: Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5.
Is there a fix for CVE-2026-114720?: Yes: fixed in Roundcube Webmail 1.6.20, 1.7.5. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-114720 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-114720?: Check whether you run Roundcube Webmail at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: Roundcube Webmail 1.6.20, 1.7.5

Technical details

The vulnerability is an IMAP command injection flaw in the mail/mark action where the _flag parameter is not properly sanitized for CRLF sequences and IMAP-special characters before being passed to IMAP commands. An authenticated attacker can exploit this to execute arbitrary IMAP commands. The fix rejects flags containing control, whitespace, and IMAP-special characters.

Affected products

Roundcube Webmail before 1.6.20 and 1.7.x before 1.7.5

Timeline

2026-10-22: disclosed
2026-10-19: patched: Upstream release 1.6.20 and 1.7.5 published

References

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