{"id":"CVE-2026-108108","title":"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","summary":"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…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N","cwe":["CWE-287"],"published":"2026-10-09","updated":"2026-10-14","sourceUpdated":"2026-10-14T02:16:59.337","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-108108","references":[{"url":"https://github.com/hotspotbilling/phpnuxbill","label":"disclosure@vulncheck.com"},{"url":"https://github.com/hotspotbilling/phpnuxbill/blob/2025.3.13/system/autoload/Password.php#L48","label":"disclosure@vulncheck.com"},{"url":"https://github.com/hotspotbilling/phpnuxbill/security/advisories/GHSA-6f62-x25v-9686","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/phpnuxbill-through-2025.3.20-chap-authentication-bypass-via-password-chap-verify","label":"disclosure@vulncheck.com"},{"url":"https://github.com/hotspotbilling/phpnuxbill/security/advisories/GHSA-6f62-x25v-9686","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00341,"epssPercentile":0.27474,"ingestedAt":"2026-10-09T16:02:33.385Z","vendor":"hotspotbilling","product":"phpnuxbill","affected":["phpnuxbill <= 2025.3.20"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-14T01:50:41.288523Z"},"slug":"CVE-2026-108108","body":"## Overview\n\nPHPNuxBill 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":221190,"id":"CVE-2026-108108","ts":1792030808286,"field":"exploit_available","old":"false","new":"true"}]}