CVE-2026-108108

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.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/hotspotbilling/phpnuxbill
https://github.com/hotspotbilling/phpnuxbill/blob/2025.3.13/system/autoload/Password.php#L48
https://github.com/hotspotbilling/phpnuxbill/security/advisories/GHSA-6f62-x25v-9686
https://www.vulncheck.com/advisories/phpnuxbill-through-2025.3.20-chap-authentication-bypass-via-password-chap-verify
https://github.com/hotspotbilling/phpnuxbill/security/advisories/GHSA-6f62-x25v-9686

Configurations

No configuration.

History

14 Oct 2026, 02:16

Type	Values Removed	Values Added
References	~~() https://github.com/hotspotbilling/phpnuxbill/security/advisories/GHSA-6f62-x25v-9686 -~~	() https://github.com/hotspotbilling/phpnuxbill/security/advisories/GHSA-6f62-x25v-9686 -

09 Oct 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-09 15:17

Updated : 2026-10-14 02:16

NVD link : CVE-2026-108108

Mitre link : CVE-2026-108108

CVE.ORG link : CVE-2026-108108

JSON object : View

Products Affected

No product.

CWE

CWE-287

Improper Authentication

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