---
id: CVE-2026-90935
title: >-
  Froxlor before 2.3.7 fails to validate the mysql_server parameter against a
  customer's allowed_mysqlserver allowlist in the Mysqls.add API command
summary: >-
  Froxlor before 2.3.7 fails to validate the mysql_server parameter against a
  customer's allowed_mysqlserver allowlist in the Mysqls.add API command.
  Attackers can supply a disallowed server index to create MySQL databases and
  users on for…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-285
vendor: froxlor
product: froxlor
affected:
  - froxlor < 2.3.7
published: '2026-09-14'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T17:17:47.590'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90935'
references:
  - url: 'https://github.com/froxlor/froxlor/security/advisories/GHSA-q4rm-m6xh-5pv7'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/froxlor-before-2.3.7-authorization-bypass-via-mysqls-add-api
    label: disclosure@vulncheck.com
  - url: 'https://github.com/froxlor/froxlor/security/advisories/GHSA-q4rm-m6xh-5pv7'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00295
epssPercentile: 0.19788
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T14:00:05.598712Z'
ingestedAt: '2026-09-14T15:23:07.421Z'
---

## Overview

Froxlor before 2.3.7 fails to validate the mysql_server parameter against a customer's allowed_mysqlserver allowlist in the Mysqls.add API command. Attackers can supply a disallowed server index to create MySQL databases and users on forbidden servers, bypassing per-customer access controls.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.