CVE-2026-108109: critical vulnerability in hotspotbilling phpnuxbill
PHPNuxBill through 2025.3.20 Account Takeover via Brute-Forceable Password Reset Code
Published
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.3epss 0.4%
exploitation probability
0.4%top 69% of all CVEs
observed exploitation
nono source reports it
PHPNuxBill through 2025.3.20 contains an account takeover vulnerability in the customer password reset flow in system/controllers/forgot.php that allows unauthenticated attackers to brute-force the 6-digit otp_code. Attackers knowing a customer username can guess the code without attempt limits or lockout, then read the newly set password from the HTTP response to hijack the account.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
hotspotbilling · phpnuxbillRelated CVEs — hotspotbilling phpnuxbill
In the same product, most dangerous first.
References
https://github.com/hotspotbilling/phpnuxbillhttps://github.com/hotspotbilling/phpnuxbill/blob/2025.3.13/system/controllers/forgot.php#L41https://github.com/hotspotbilling/phpnuxbill/commit/c3c2a92d468af91136d747b75142ed72f10320cchttps://github.com/hotspotbilling/phpnuxbill/security/advisories/GHSA-337r-rrrc-r559https://www.vulncheck.com/advisories/phpnuxbill-through-2025.3.20-account-takeover-via-brute-forceable-password-reset-code