Payment Gateway of Stripe for WooCommerce <= 5.0.8 - Unauthenticated Improper Verification of Cryptographic Signature via woocommerce_api_wt_stripe Webhook Endpoint

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-9832
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-19 08:16:55 UTC
Updated2026-09-21 13:33:33 UTC
DescriptionThe Payment Gateway of Stripe for WooCommerce plugin for WordPress is vulnerable to Improper Verification of Cryptographic Signature in all versions up to, and including, 5.0.8. This is due to the publicly accessible `woocommerce_api_wt_stripe` webhook endpoint (`EH_Stripe_Webhook_Handler::handle()`) wrapping the only call to `\Stripe\Webhook::constructEvent()` inside an `if (!empty($endpoint_secret))` guard that is never entered on default installations — because the `eh_stripe_webhook_secret` option is empty after a fresh plugin install — causing the raw, attacker-controlled POST body to be decoded and processed as a fully trusted Stripe event without any signature verification, authentication, or authorization. This makes it possible for unauthenticated attackers to send forged Stripe webhook events to manipulate WooCommerce order statuses, including marking unpaid orders as paid or completed via `payment_complete()`, forcing legitimate orders into a failed state, fabricating dispute notifications, and injecting forged refund events. This vulnerability is only exploitable when the Stripe webhook signing secret has not been configured by an administrator; once a valid signing secret is saved, `\Stripe\Webhook::constructEvent()` is enforced and forged requests are rejected.

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

EPSS: 0.002260000 probability, percentile 0.135810000 (date 2026-09-22)

Problem Types: CWE-347 | CWE-347 CWE-347 Improper Verification of Cryptographic Signature

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.3MEDIUMCVSS: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 Themehigh Payment Gateway Of Stripe For WooCommerce affected 5.0.8 semver Not specified

References

ReferenceSourceLinkTags
www.wordfence.com/threat-intel/vulnerabilities/id/2cef154c-efb8-4455-9be6-e3cf8... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/ta... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/ta... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/ta... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/ta... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/ta... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/ta... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/ta... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/ta... [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: pradeep suvarna (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-09-18T19:19:07.000ZDisclosed

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