Description
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.
Published: 2026-10-09
Score: 9.3 Critical
EPSS: n/a
KEV: No
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Fri, 09 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 09 Oct 2026 14:45:00 +0000

Type Values Removed Values Added
Description 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.
Title PHPNuxBill through 2025.3.20 Account Takeover via Brute-Forceable Password Reset Code
Weaknesses CWE-307
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 9.3, 'vector': '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'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-09T17:26:03.792Z

Reserved: 2026-10-09T13:44:40.883Z

Link: CVE-2026-108109

cve-icon Vulnrichment

Updated: 2026-10-09T17:25:52.541Z

cve-icon NVD

Status : Deferred

Published: 2026-10-09T15:17:12.047

Modified: 2026-10-09T18:17:06.727

Link: CVE-2026-108109

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-09T15:30:08Z

Weaknesses