CVE-2026-6939Network attack vector

Unauthenticated stored XSS via ignored signature failure

Published Jul 11, 2026 · Updated Jul 11, 2026

Stored XSS in CorvusPay WooCommerce Payment Gateway 2.7.4 and earlier allows remote attackers to execute scripts via approval_code. The public success REST route accepts any caller, logs a failed callback-signature check without stopping, and stores approval_code without adequate sanitization before later output. No authentication is required to plant the payload; execution occurs in a user's browser when affected order details or email content is viewed.

CVSS severity7.2
High
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in CorvusPay WooCommerce Payment Gateway 2.7.4 and earlier allows remote attackers to execute scripts via approval_code. The public success REST route accepts any caller, logs a failed callback-signature check without stopping, and stores approval_code without adequate sanitization before later output. No authentication is required to plant the payload; execution occurs in a user's browser when affected order details or email content is viewed.

The record

CVE
CVE-2026-6939
Published
Jul 11, 2026
Updated
Jul 11, 2026
Vendor
Corvus Pay
Product
CorvusPay WooCommerce Payment Gateway
Classifications
CWE-79, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.7.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Corvus Pay · CorvusPay WooCommerce Payment Gatewayversion=0 <=2.7.4

Published CVSS scores

7.2WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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