CVE-2026-107147
Authentication bypass by spoofing in twofactor_gauthenticator
- State
- Published
- Severity
- 6.3 Medium
- Published
- Oct 27, 2026
- Updated
- Oct 27, 2026
- Reserved
- Oct 7, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.3 Medium | CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N | CERT-PL |
Weaknesses
- CWE-290 Authentication bypass by spoofing
Affected Products
| Product | Versions |
|---|---|
twofactor_gauthenticatoralexandregz |
|
References
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