Secuno
ENNL
Book demo

CVE-2026-108109

PHPNuxBill vulnerability

9.1 CRITICALEPSS 0.39%
  1. Published9 Oct 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-1056389.1
Plane is an open-source project management tool. Prior to 1.4.0, Plane's magic-code…
CVE-2026-857349.1
LightRAG provides simple and fast retrieval-augmented generation. Prior to 1.5.5, the…
CVE-2026-62239.4
Improper restriction of excessive authentication attempts vulnerability in Bahçelievler…
CVE-2026-852378.1
A vulnerability in MISP's email-based one-time password (OTP) authentication flow…
CVE-2026-786559.1
Punk::Plugin::TOTP versions before 0.05 for Perl allow the second-factor attempt limit…
CVE-2026-730569.8
SiYuan kernel versions before 3.7.4 contain an improper restriction of excessive…

Frequently asked

Is CVE-2026-108109 being actively exploited?

CVE-2026-108109 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.39%.

How severe is CVE-2026-108109?

CVE-2026-108109 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.39% probability of exploitation.

How do I fix CVE-2026-108109?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-108109 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.