CVE-2026-127204 WooCommerce PayPal Pro Payment Gateway < 4.1.1 Payment Bypass via pp_capture_order

8.7 highEPSS 0.2%

High (8.7) in wp.insider payment gateway for paypal pro, paypal checkout & subscriptions for woocommerce. EPSS 0.2% estimated probability of exploitation activity in the next 30 days.

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Severity
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Affected
Versions
Attack patterns (CAPEC)
References
Your exposure

WooCommerce PayPal Pro Payment Gateway plugin before 4.1.1 contains an unauthenticated payment bypass vulnerability that allows remote attackers to mark unpaid orders as paid by exploiting the pp_capture_order AJAX handler, which is gated only by a public checkout nonce and fails to properly validate the PayPal capture response status. Attackers can supply a valid _paypal_order_id to trigger payment_complete() without verifying the capture status or amount, causing the store to fulfill goods or services that were never paid for and resulting in direct financial loss to the merchant.

Severity

CVSS 4.0

8.7 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

7.5 high

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

EPSS: 0.2% estimated probability of exploitation activity in the next 30 days; 8th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
CISA's assessment (SSVC): Exploitation: none · Automatable: yes · Technical impact: partial, assessed 2026-11-13. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
CWE: CWE-345 Insufficient Verification of Data Authenticity
OWASP Top 10: A08:2025 Software or Data Integrity Failures
Published: 2026-11-12 18:17 UTC
Modified: 2026-11-13 19:19 UTC
Assigned by: VulnCheck (CNA)
NVD analysis: Awaiting analysis
Record from: the NVD, synced 2026-11-13 19:41 UTC

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Affected

wp.insider:payment gateway for paypal pro, paypal checkout & subscriptions for woocommerce

Versions

From the CNA's record in the CVE List.

Product	Affected
wp.insider Payment Gateway for PayPal Pro, PayPal Checkout & Subscriptions for WooCommerce	before 4.1.1

Attack patterns (CAPEC)

The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits. More on the page of CWE-345 (12).

References

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