CVE-2026-9832Payment Gateway of Stripe for WooCommerce <= 5.0.8 - Unauthenticated Improper Verification of Cryptographic Signature via woocommerce_api_wt_stripe Webhook Endpoint
- 5.3MediumCVSS base score
- 0.56%Exploitation in 30 daysEPSS · top 53% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
The 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.
Timeline
ID reserved
By Wordfence
- 4 months later
· 4 months later
Published
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| WordfenceCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
| NVDNVD · Deferred | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N |
- EPSS (exploitation in 30 days)
- 0.56% · top 53% of all CVEs (13 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
themehigh · Payment Gateway of Stripe for WooCommerce
- affected ≤ 5.0.8
References
References10
- https://www.wordfence.com/threat-intel/vulnerabilities/id/2cef154c-efb8-4455-9be6-e3cf8b95e9d3?source=cve (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/tags/5.0.8/includes/class-eh-stripe-webhook-handler.php#L93 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/tags/5.0.8/includes/class-eh-stripe-webhook-handler.php#L66 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/tags/5.0.8/includes/class-eh-stripe-webhook-handler.php#L18 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/tags/5.0.8/includes/class-eh-stripe-webhook-handler.php#L321 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/tags/5.0.7/includes/class-eh-stripe-webhook-handler.php#L93 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/tags/5.0.7/includes/class-eh-stripe-webhook-handler.php#L66 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/tags/5.0.7/includes/class-eh-stripe-webhook-handler.php#L18 (opens in a new tab)
- https://plugins.trac.wordpress.org/browser/payment-gateway-stripe-and-woocommerce-integration/tags/5.0.7/includes/class-eh-stripe-webhook-handler.php#L321 (opens in a new tab)
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3575195%40payment-gateway-stripe-and-woocommerce-integration&new=3575195%40payment-gateway-stripe-and-woocommerce-integration (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2026-83540 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2026-9832)Record last updated .