{"id":"CVE-2026-107147","revision":"fde5eb62e6da4ae19e8d6221045f3b8f","records":[{"revision":"fde5eb62e6da4ae19e8d6221045f3b8f","observedAt":"2026-10-27T11:09:21.992+00:00","statement":{"source":"cve-program","id":"CVE-2026-107147","aliases":[],"title":"Authentication bypass by spoofing in twofactor_gauthenticator","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\u00A0headers, an attacker\u00A0who 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.","state":0,"publishedAt":"2026-10-27T09:36:01.938+00:00","modifiedAt":"2026-10-27T09:36:01.938+00:00","affected":[{"ecosystem":"https://github.com","name":"twofactor_gauthenticator","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"alexandregz\",\n                    \"product\": \"twofactor_gauthenticator\",\n                    \"collectionURL\": \"https://github.com\",\n                    \"repo\": \"https://github.com/alexandregz/twofactor_gauthenticator\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"lessThan\": \"4640889\",\n                            \"versionType\": \"git\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"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","score":6.3,"severity":"MEDIUM"}],"references":["https://cert.pl/en/posts/2026/10/CVE-2026-107145","https://github.com/alexandregz/twofactor_gauthenticator/blob/master/CHANGES-2FA-SECURITY.en.md"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107147","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-107147","identifiers":["CVE-2026-107147"]},"retained":false,"historicalAffected":[]}],"coverage":[]}