{"affected":[{"defaultStatus":"unaffected","ecosystem":"https://github.com","product":"twofactor_gauthenticator","source":"CNA: CERT-PL","vendor":"alexandregz","versions":[{"lessThan":"4640889","status":"affected","version":"0","versionType":"git"}]}],"cveId":"CVE-2026-107147","cwes":["CWE-290"],"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.","epss":{"date":"2026-11-04","percentile":0.33546,"score":0.00392},"exploits":[],"kev":null,"metrics":[{"score":6.3,"severity":"medium","source":"CNA: CERT-PL","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","version":"4.0"}],"modifiedAt":1793804291190,"publishedAt":1793093761938,"references":[{"source":"CNA: CERT-PL","tags":["third-party-advisory"],"url":"https://cert.pl/en/posts/2026/10/CVE-2026-107145"},{"source":"CNA: CERT-PL","tags":["patch"],"url":"https://github.com/alexandregz/twofactor_gauthenticator/blob/master/CHANGES-2FA-SECURITY.en.md"}],"remediation":[{"kind":"fix","source":"CNA: CERT-PL","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/alexandregz/twofactor_gauthenticator/blob/master/CHANGES-2FA-SECURITY.en.md"}],"revision":"f8d6e54263ae334b748acd1b8e91d8a04ef6577e51805498c955ee9584eadad7","sources":[{"modifiedAt":1793804291190,"name":"CNA: CERT-PL","retrievedAt":1793804938022,"url":"https://www.cve.org/CVERecord?id=CVE-2026-107147"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793804945720,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-107147"}],"ssvc":{"assessedAt":1793803877898,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Authentication bypass by spoofing in twofactor_gauthenticator","updatedAt":1793804945720}