CVE-2026-108108

PHPNuxBill through 2025.3.20 CHAP Authentication Bypass via Password::chap_verify()

Published Oct 9, 2026 CVSS 4.0 · 7.1 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Hotspotbilling
Hotspotbilling phpnuxbill
Vendors & Products Hotspotbilling
Hotspotbilling phpnuxbill
Type Values Removed Values Added
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.
Title PHPNuxBill through 2025.3.20 CHAP Authentication Bypass via Password::chap_verify()
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 7.1, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N'}

cvssV4_0

{'score': 7.1, '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Oct 14, 2026, 1:51 AM
Reserved
Oct 9, 2026, 1:44 PM
Status
Deferred
Published
Oct 9, 2026, 3:17 PM
Modified
Oct 14, 2026, 2:16 AM