{"id":"CVE-2026-108108","revision":"6092eb49f5ec49e8b511bb24feea26fb","records":[{"revision":"6092eb49f5ec49e8b511bb24feea26fb","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-108108","aliases":[],"title":"PHPNuxBill through 2025.3.20 CHAP Authentication Bypass via Password::chap_verify()","description":"PHPNuxBill through 2025.3.20 contains an authentication bypass vulnerability in RADIUS CHAP verification because Password::chap_verify() returns true when the supplied response does not match. Attackers who know a valid customer or PPPoE username can log in through MikroTik hotspot or PPPoE CHAP with any incorrect password to obtain network access and consume that customer's plan.","state":0,"publishedAt":"2026-10-09T14:33:31.585+00:00","modifiedAt":"2026-10-14T01:51:06.748+00:00","affected":[{"ecosystem":"Vendor product","name":"phpnuxbill","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"hotspotbilling\",\n                    \"product\": \"phpnuxbill\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"custom\",\n                            \"lessThanOrEqual\": \"2025.3.20\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","score":7.1,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","score":7.1,"severity":"HIGH"}],"references":["https://github.com/hotspotbilling/phpnuxbill/security/advisories/GHSA-6f62-x25v-9686","https://github.com/hotspotbilling/phpnuxbill/blob/2025.3.13/system/autoload/Password.php#L48","https://github.com/hotspotbilling/phpnuxbill","https://www.vulncheck.com/advisories/phpnuxbill-through-2025.3.20-chap-authentication-bypass-via-password-chap-verify"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-108108","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-108108","identifiers":["CVE-2026-108108"]},"retained":false,"historicalAffected":[]}],"coverage":[]}