CVE-2026-108108
PHPNuxBill through 2025.3.20 CHAP Authentication Bypass via Password::chap_verify()
- State
- Published
- Severity
- 7.1 High
- Published
- Oct 9, 2026
- Updated
- Oct 14, 2026
- Reserved
- Oct 9, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.1 High | 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 | VulnCheck |
| 3.1 | 7.1 High | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N | VulnCheck |
Weaknesses
- CWE-287 Improper Authentication
Affected Products
| Product | Versions |
|---|---|
phpnuxbillhotspotbilling |
|
References
- GitHub Security Advisory (GHSA-6f62-x25v-9686)vendor-advisory
- https://github.com/hotspotbilling/phpnuxbill/blob/2025.3.13/system/autoload/Password.php#L48technical-description
- https://github.com/hotspotbilling/phpnuxbillproduct
- VulnCheck Advisory: PHPNuxBill through 2025.3.20 CHAP Authentication Bypass via Password::chap_verify()third-party-advisory
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.