CVE-2026-107852

HighCVSS 7.1

Published: 09/10/2026(UTC)Updated: 16/10/2026(UTC)Translated: 10/10/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Low risk

0.16%

5th percentile - higher than 5% of all known CVEs

Summary

Jexactyl versions prior to 4.0.5 — the POST /api/client/billing/stripe/process endpoint accepts a client-supplied Stripe Checkout Session when payment_status is paid but does not compare amount_total or currency with the referenced order and configured billing currency. An authenticated client can complete a lower-value or mismatched-currency payment and cause the order to be processed. The issue is fixed in version 4.0.5.

Risk Assessment

An attacker can obtain a server, renewal, upgrade, or unsuspension for less than the required price, causing financial loss. The risk affects instances with the billing module enabled and a Stripe secret key configured.

Recommendation

Update Jexactyl to version 4.0.5 or later. Until then, consider disabling the billing module.

Other vulnerabilities in Jexactyl

CVE-2026-107854Medium
Jexactyl is a customisable game management panel and billing system. From 4.0.0 until 4.0.5, the POST /api/client/billing/free/process endpoint accepts a client-controlled server_id and loads the server without restricting the lookup to servers owned by the authenticated account. On installations with billing enabled, an authenticated user can renew or unsuspend another tenant's billable server when its renewal_date is non-null and more than seven days away, even without a subuser relationship to that server. This issue is fixed in version 4.0.5.

Original NVD description (English source)

Jexactyl is a customisable game management panel and billing system. Prior to 4.0.5, the POST /api/client/billing/stripe/process endpoint accepts a client-supplied Stripe Checkout Session when payment_status is paid but does not compare amount_total or currency with the referenced order and configured billing currency. On an instance where the billing module is enabled and a Stripe secret key is configured, an authenticated client can therefore complete a lower-value or mismatched-currency payment and cause the order to be processed, provisioning, renewing, upgrading, or unsuspending the purchased server for less than the required price. This issue is fixed in version 4.0.5.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS