CVE-2026-121435: Froxlor authorization bypass in Mysqls.add API

CVE-2026-121435 · Severity: medium · CVSS 4.3 · Published 2026-11-03

Froxlor is a web hosting control panel that allows administrators to manage customer accounts and services. An authenticated customer can create MySQL databases through the API even when the administrator has disabled the MySQL feature, bypassing intended policy controls. This allows customers to consume resources contrary to admin policy, though each customer remains restricted to their own quota.

Technologies: Froxlor. Vendors: Froxlor.

Quick answers

Is CVE-2026-121435 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-121435 being exploited in the wild.
How severe is CVE-2026-121435?
Medium severity, with a CVSS score of 4.3, published 3 November 2026.
Which products and versions are affected?
Froxlor before 2.3.15.
Is there a fix for CVE-2026-121435?
Yes: fixed in 2.3.15. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-121435 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-121435?
Check whether you run Froxlor at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: 2.3.15

Technical details

The Mysqls::add() API endpoint in Froxlor lacks the customer_hide_options authorization check present in the get(), update(), and delete() methods, allowing authenticated customers to bypass the admin policy that hides or disables MySQL for them. The vulnerability requires low privilege (authenticated customer access) and can be exploited remotely via API calls with no user interaction. The fix adds the missing authorization check to the add() method.

Affected products

  • Froxlor Froxlor before 2.3.15

Timeline

  • 2026-10-20: disclosed
  • 2026-11-03: advisory

References

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