CVE-2026-108108
PHPNuxBill through 2025.3.20 CHAP Authentication Bypass via Password::chap_verify()
CVSS Score
7.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-287 |
| Vendor | hotspotbilling |
| Product | phpnuxbill |
| Published | Oct 9, 2026 |
Stay Ahead of the Next One
Get instant alerts for hotspotbilling phpnuxbill
Be the first to know when new high vulnerabilities affecting hotspotbilling phpnuxbill are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
None
Affected Versions
hotspotbilling / phpnuxbill
0 ≤ 2025.3.20
References
github.com: https://github.com/hotspotbilling/phpnuxbill/security/advisories/GHSA-6f62-x25v-9686 github.com: https://github.com/hotspotbilling/phpnuxbill/blob/2025.3.13/system/autoload/Password.php#L48 github.com: https://github.com/hotspotbilling/phpnuxbill vulncheck.com: https://www.vulncheck.com/advisories/phpnuxbill-through-2025.3.20-chap-authentication-bypass-via-password-chap-verify
Credits
kitu232 🔍 leediay153 from Viettel Post