Vulnerability Description
The twofactor_gauthenticator plugin for Roundcube is vulnerable to brute-forcing of the second-factor code. Due to the lack of rate limiting, an attacker who obtains user's password can submit arbitrary 6-digit codes, resulting in second-factor bypass and unauthorized access to the system. This issue was fixed in commit 4640889.
Related Weaknesses (CWE)
References
- https://cert.pl/en/posts/2026/10/CVE-2026-107145
- https://github.com/alexandregz/twofactor_gauthenticator/blob/master/CHANGES-2FA-
FAQ
What is CVE-2026-107145?
CVE-2026-107145 is a documented vulnerability. The twofactor_gauthenticator plugin for Roundcube is vulnerable to brute-forcing of the second-factor code. Due to the lack of rate limiting, an attacker who obtains user's password can submit arbitra...
How severe is CVE-2026-107145?
CVSS scoring is not yet available for CVE-2026-107145. Check NVD for updates.
Is there a patch for CVE-2026-107145?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.