cvedb.io
CVE-2026-5167
MEDIUM · CVSS 5.3
EPSS exploitation probability: 0%
Published 2026-04-08T07:16:22.853 · Last modified 2026-06-17T10:58:31.977

Summary

The Masteriyo LMS – Online Course Builder for eLearning, LMS & Education plugin for WordPress is vulnerable to Authorization Bypass Through User-Controlled Key in versions up to and including 2.1.7. This is due to insufficient webhook signature verification in the handle_webhook() function. The webhook endpoint processes unauthenticated requests and only performs signature verification if both the webhook_secret setting is configured AND the HTTP_STRIPE_SIGNATURE header is present. Since webhook_secret defaults to an empty string, the webhook processes attacker-controlled JSON payloads without any verification. This makes it possible for unauthenticated attackers to send fake Stripe webhook events with arbitrary order_id values in the metadata, mark any order as completed without payment,

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.