STRABL <= 4.5 - Unauthenticated Arbitrary Webhook Creation via REST API Endpoint

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2026-3640
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-19 08:16:16 UTC
Updated2026-06-19 08:16:16 UTC
DescriptionThe STRABL – A checkout solution plugin for WordPress is vulnerable to Missing Authentication in all versions up to and including 4.5. The plugin registers a REST API webhook endpoint at /wp-json/strabl/webhook/order with a permission_callback of __return_true, which allows all incoming requests without any authentication or authorization checks. No shared secret, signature validation, HMAC verification, or token-based authentication is implemented. This makes it possible for unauthenticated attackers to create fraudulent WooCommerce orders and mark them as completed by supplying paymentStatus=paid, manipulate existing order statuses by providing an externalOrderId, create new WordPress user accounts with the customer role, issue refunds on existing orders, cancel existing orders, and apply chargeback fees — all without making a legitimate payment or having any valid credentials.

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Strablengineering STRABL A Checkout Solution affected 4.5 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/strabl-a-checkout-solution/tags/4.5/src/Orders/OrderW... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/strabl-a-checkout-solution/tags/4.5/src/Orders/Custom... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/strabl-a-checkout-solution/tags/4.5/src/Orders/OrderW... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/strabl-a-checkout-solution/trunk/src/Orders/OrderWebh... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/strabl-a-checkout-solution/tags/4.5/src/Orders/OrderW... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/strabl-a-checkout-solution/trunk/src/Orders/CustomerR... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/strabl-a-checkout-solution/trunk/src/Orders/OrderWebh... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/strabl-a-checkout-solution/tags/4.5/src/Orders/OrderW... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/04eb82e4-1738-44c7-980e-8e33a... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/strabl-a-checkout-solution/tags/4.5/src/Orders/OrderW... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset/3558301 [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/strabl-a-checkout-solution/trunk/src/Orders/OrderWebh... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/strabl-a-checkout-solution/trunk/src/Orders/OrderWebh... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/strabl-a-checkout-solution/trunk/src/Orders/OrderWebh... [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Teerachai Somprasong (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-09T10:17:59.000ZVendor Notified
CNA2026-06-18T17:50:04.000ZDisclosed
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