What is CVE-2026-6939?

CVE-2026-6939 is a high-severity vulnerability in Corvusinfo Corvuspay Woocommerce Payment Gateway, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-07-11.

How severe is CVE-2026-6939?

High severity. CVSS v3 base score is 7.2 out of 10.

XSS in Corvusinfo Corvuspay Woocommerce Payment Gateway

CVE-2026-6939

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.006 (44.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N.

Affected products

Corvusinfo Corvuspay Woocommerce Payment Gateway — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-6939?: CVE-2026-6939 is a high-severity vulnerability in Corvusinfo Corvuspay Woocommerce Payment Gateway, classified under Cross-site Scripting. CVSS score: 7.2/10. Published 2026-07-11.
How severe is CVE-2026-6939?: High severity. CVSS v3 base score is 7.2 out of 10.