CVE-2026-87838
Deferred Deferred - Pending Action

Authentication Bypass in Wava Payment Plugin

Publication date: 2026-10-21

Last updated on: 2026-10-21

Assigner: WPScan

Description
The Wava Payment Plugin WordPress plugin before 0.3.10 does not perform any authorisation, nonce or origin verification on one of its public REST endpoints, allowing unauthenticated attackers to overwrite the stored credential that identifies the merchant account the store's payments are created against, to force the integration into a verified state the site owner never completed, and to remove the payment method from the store's checkout.

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Meta Information

Published
2026-10-21
Last Modified
2026-10-21
Generated
2026-11-10
AI Q&A
2026-10-21
EPSS Evaluated
2026-11-09
NVD
CVE-2026-87838
EUVD
EUVD-2026-107087

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Unknown Wava Payment Plugin 0.3.1

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

The Wava Payment Plugin for WordPress before version 0.3.10 has a vulnerability where it lacks authorization, nonce, or origin verification on a public REST endpoint. This allows unauthenticated attackers to overwrite merchant credentials, force the integration into a verified state without the site owner's consent, and remove the payment method from the store's checkout.

Detection Guidance

Check if the Wava Payment Plugin is installed and verify its version. If the version is between 0.3.1 and 0.3.9, the system is vulnerable. Use WordPress admin panel or run commands like 'wp plugin list' in the WordPress directory to check the plugin version.

Impact Analysis

Unauthenticated attackers could manipulate your payment system by changing merchant credentials, forcing a verified state without your consent, or removing the payment method entirely. This could disrupt transactions and potentially lead to financial losses or unauthorized access to payment data.

Compliance Impact

This vulnerability could impact compliance by allowing unauthorized changes to payment systems, potentially violating data protection requirements under GDPR or HIPAA. Unauthorized access or modifications may lead to breaches of confidentiality or integrity of payment data.

Mitigation Strategies

Update the Wava Payment Plugin to version 0.3.10 or later immediately. If updating is not possible, consider disabling the plugin temporarily until an update is applied.

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