Vulnerability Description
The twofactor_gauthenticator plugin for Roundcube is vulnerable to 2fa authentication bypass by spoofed client address headers. Due to the lack of validation of the Client-IP and X-Forwarded-For headers, an attacker who obtains user's password can spoof a whitelisted IP address, resulting in the second factor being bypassed. 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-2026-107147?
CVE-2026-107147 is a documented vulnerability. The twofactor_gauthenticator plugin for Roundcube is vulnerable to 2fa authentication bypass by spoofed client address headers. Due to the lack of validation of the Client-IP and X-Forwarded-For heade...
How severe is CVE-2026-107147?
CVSS scoring is not yet available for CVE-2026-107147. Check NVD for updates.
Is there a patch for CVE-2026-107147?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.