CVE-2026-52793 froxlor CVE debrief

Who should care

System administrators and security teams responsible for Froxlor installations, especially those with two-factor authentication enabled, should assess their exposure and take immediate action to prevent potential data breaches.

Why it matters

CVE-2026-52793 is a high-severity vulnerability in Froxlor that allows an attacker with a valid API key and secret to access and modify sensitive data without providing a second factor of authentication. Defenders should prioritize verifying Froxlor API authentication configurations, checking for exposed API keys, and ensuring that all administrators and customers with two-factor authentication enabled are aware of this vulnerability.

• Potential exposure of customer data.
• Possible modification of domains, email and FTP accounts, databases, DNS records, and certificate material.
• Bypass of two-factor authentication for API access.
• Verification of Froxlor API authentication configurations and exposed API keys is required.

Technical summary

The Froxlor API authentication path in lib/Froxlor/Api/FroxlorRPC.php and FroxlorRPC::validateAuth does not check type_2fa, validate a TOTP code, or invoke FroxlorTwoFactorAuth when accepting an API key and secret for an administrator or customer account. This allows an attacker with a valid API key and secret to access API functions without supplying the configured second factor, potentially exposing or modifying sensitive data.

Defensive priority

Defenders should prioritize verifying Froxlor API authentication configurations, checking for exposed API keys, and ensuring that all administrators and customers with two-factor authentication enabled are aware of this vulnerability. Immediate action is required to prevent potential data breaches.

Recommended defensive actions

• Verify Froxlor API authentication configurations to prevent unauthorized access.
• Check for exposed API keys and secrets.
• Ensure that all administrators and customers with two-factor authentication enabled are aware of this vulnerability.
• Upgrade to Froxlor version 2.3.7 or later.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record and NVD entry provide details about the vulnerability, its impact, and the fixed version. However, the corpus does not provide information on actual exploitation or affected systems. To verify exposure, defenders should check Froxlor API authentication configurations, look for exposed API keys and secrets, and ensure administrators and customers with two-factor authentication enabled are aware of this vulnerability. Verification tasks include reviewing API key and secret management, checking for unauthorized access, and

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.