CVE-2026-108108

High

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.

SeverityHigh
CVSS7.1
Exploit probability—
ProductHotspotbilling Phpnuxbill
PublishedOct 9, 2026
First seenOct 9, 2026

How to fix

Affected products

ProductAffected versionsFixed in
hotspotbilling phpnuxbillv ≤ 2025.3.20—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.