{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5167", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2026-03-30T15:04:11.752Z", "datePublished": "2026-04-08T06:43:41.319Z", "dateUpdated": "2026-04-08T06:43:41.319Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-04-08T06:43:41.319Z"}, "affected": [{"vendor": "masteriyo", "product": "Masteriyo LMS \u2013 Online Course Builder for eLearning, LMS & Education", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "2.1.7", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The Masteriyo LMS \u2013 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, and gain unauthorized access to paid course content."}], "title": "Masteriyo LMS <= 2.1.7 - Unauthenticated Authorization Bypass to Arbitrary Order Completion via Stripe Webhook Endpoint", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b6d51dc3-b695-4e9d-b25a-d1b302be1fec?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/learning-management-system/trunk/addons/stripe/StripeAddon.php#L563-639"}, {"url": "https://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.1.4/addons/stripe/StripeAddon.php#L563-639"}, {"url": "https://plugins.trac.wordpress.org/browser/learning-management-system/trunk/addons/stripe/StripeAddon.php#L649-704"}, {"url": "https://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.1.4/addons/stripe/StripeAddon.php#L649-704"}, {"url": "https://plugins.trac.wordpress.org/changeset/3499458/learning-management-system/trunk/addons/stripe/StripeAddon.php"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-639 Authorization Bypass Through User-Controlled Key", "cweId": "CWE-639", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM"}}], "credits": [{"lang": "en", "type": "finder", "value": "Md. Moniruzzaman Prodhan"}], "timeline": [{"time": "2026-03-30T15:19:24.000Z", "lang": "en", "value": "Vendor Notified"}, {"time": "2026-04-07T17:55:41.000Z", "lang": "en", "value": "Disclosed"}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "The Masteriyo LMS \u2013 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, and gain unauthorized access to paid course content."}], "id": "CVE-2026-5167", "lastModified": "2026-04-08T07:16:22.853", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security@wordfence.com", "type": "Primary"}]}, "published": "2026-04-08T07:16:22.853", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.1.4/addons/stripe/StripeAddon.php#L563-639"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/learning-management-system/tags/2.1.4/addons/stripe/StripeAddon.php#L649-704"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/learning-management-system/trunk/addons/stripe/StripeAddon.php#L563-639"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/learning-management-system/trunk/addons/stripe/StripeAddon.php#L649-704"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset/3499458/learning-management-system/trunk/addons/stripe/StripeAddon.php"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b6d51dc3-b695-4e9d-b25a-d1b302be1fec?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-639"}], "source": "security@wordfence.com", "type": "Primary"}]}

{}

{}