CVE-2026-107147

UNKNOWN 0.0

Authentication bypass by spoofing in twofactor_gauthenticator

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-290
Vendor	alexandregz
Product	twofactor_gauthenticator
Published	Oct 27, 2026

Stay Ahead of the Next One

Get instant alerts for alexandregz twofactor_gauthenticator

Be the first to know when new unknown vulnerabilities affecting alexandregz twofactor_gauthenticator are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

Affected Versions

alexandregz / twofactor_gauthenticator

0 < 4640889

References

NVD ↗ CVE.org ↗ EPSS Data ↗

cert.pl: https://cert.pl/en/posts/2026/10/CVE-2026-107145 github.com: https://github.com/alexandregz/twofactor_gauthenticator/blob/master/CHANGES-2FA-SECURITY.en.md

Credits

Marek Figielski (Vanilla.pl)