CVE-2026-107147
The twofactor_gauthenticator plugin for Roundcube is vulnerable to 2fa authentication bypass by…
- Risk score
- 46/100
- CVSS
- 6.3 v4.0
- Exploit chance (30 days)
- 0.5%
- Published
- 27 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 by…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.3 medium
References
Original 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.
Last activity 27 Oct 2026. Patch Forecast updates every hour.