corvusinfo CorvusPay WooCommerce Payment Gateway Plugin up to 2.7.4 on WordPress approval_code success cross site scripting

Summaryinfo

A vulnerability labeled as problematic has been found in corvusinfo CorvusPay WooCommerce Payment Gateway Plugin up to 2.7.4. Affected is an unknown function of the file /wp-json/corvuspay/success of the component approval_code Handler. The manipulation of the argument approval_code results in cross site scripting. This vulnerability is reported as CVE-2026-6939. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in corvusinfo CorvusPay WooCommerce Payment Gateway Plugin up to 2.7.4. It has been classified as problematic. Affected is an unknown part of the file /wp-json/corvuspay/success of the component approval_code Handler. The manipulation of the argument approval_code with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

The CorvusPay WooCommerce Payment Gateway plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'approval_code' parameter in all versions up to, and including, 2.7.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The unauthenticated REST endpoint POST /wp-json/corvuspay/success/ is registered with permission_callback set to __return_true, and although a signature validation step exists it only logs the result without halting execution, meaning an attacker can supply a completely arbitrary signature and have a malicious approval_code stored in the database unchallenged.

The advisory is shared for download at wordfence.com. This vulnerability is traded as CVE-2026-6939 since 04/23/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• WordPress Plugin

Vendor

• corvusinfo

Name

• CorvusPay WooCommerce Payment Gateway Plugin

Version

• 2.7.0
• 2.7.1
• 2.7.2
• 2.7.3
• 2.7.4

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Once again VulDB remains the best source for vulnerability data.

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