{"id":"CVE-2026-107147","published":"2026-10-27T10:16:54.290","lastModified":"2026-10-27T15:07:32.527","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.\n\n\n\n\nThis issue was fixed in commit 4640889.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-290"],"vendors":[],"products":[],"references":[{"url":"https://cert.pl/en/posts/2026/10/CVE-2026-107145","tags":[]},{"url":"https://github.com/alexandregz/twofactor_gauthenticator/blob/master/CHANGES-2FA-SECURITY.en.md","tags":[]}],"exploitRefs":[{"url":"https://github.com/alexandregz/twofactor_gauthenticator/blob/master/CHANGES-2FA-SECURITY.en.md","tags":[]}],"hasPoc":true,"ai":null}