EUVD-2026-70991
GHSA-fv86-3573-g83v
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Network-reachable, no auth, no interaction; I:L per CVSS semantics (constrained modification of order status), though financial fraud impact exceeds the score.
Primary rating from Vendor (wpscan).
CVSS VectorVendor: wpscan
Lifecycle Timeline
4DescriptionCVE.org
The ePayco Payment Gateway for WooCommerce WordPress plugin before 8.4.7 does not properly verify the authenticity of payment confirmation requests, allowing unauthenticated attackers to mark orders as paid without a valid gateway signature.
AnalysisAI
Payment fraud is possible against any WooCommerce store running the ePayco Payment Gateway plugin before version 8.4.7, because the plugin accepts payment confirmation callbacks without verifying the gateway signature. Unauthenticated remote attackers can POST a crafted IPN/webhook payload to the store's payment callback endpoint, causing the plugin to transition order status to 'paid' and triggering fulfillment workflows - without any actual funds being transferred. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The ePayco Payment Gateway for WooCommerce plugin must be installed, active, and configured on a WooCommerce store running a version prior to 8.4.7. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.3 score (AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N) technically captures the integrity-only, unauthenticated, network-reachable nature of the flaw, but I:L materially understates business impact: successful exploitation results in order fulfillment without payment, constituting direct financial fraud. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Update the ePayco Payment Gateway for WooCommerce plugin to version 8.4.7 or later immediately. … Detailed patch versions, workarounds, and compensating controls in full report. |
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External POC / Exploit Code
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