CVE-2026-103298 CCAvenue CVE debrief

Who should care

Defenders responsible for WooCommerce installations using the CCAvenue Payment Gateway plugin should assess exposure and prioritize verification of payment confirmation request authenticity.

Why it matters

The CCAvenue Payment Gateway for WooCommerce plugin vulnerability allows unauthenticated attackers to forge payment confirmation requests, potentially leading to unauthorized order completion.

• Verify payment confirmation request authenticity to prevent unauthorized order completion
• Update to a fixed version if available to prevent exploitation
• Monitor for suspicious payment activity to detect potential attacks

Technical summary

The CCAvenue Payment Gateway for WooCommerce WordPress plugin through 3.1 is vulnerable to unauthenticated order payment completion via webhook forgery. This vulnerability allows unauthenticated attackers to forge a confirmation and mark any WooCommerce order as paid without payment. The plugin does not verify that a payment-confirmation request genuinely originates from the payment provider, and derives its verification key from a value that is empty on a default install. Defenders should prioritize verifying the authenticity of payment confirmation requests and updating to a fixed version if available.

Defensive priority

Defenders should prioritize verifying the authenticity of payment confirmation requests and updating to a fixed version if available.

Recommended defensive actions

• Verify the authenticity of payment confirmation requests
• Update to a fixed version if available
• Monitor for suspicious payment activity
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The CVE record and source item provide details on the vulnerability, but limited information is available on affected versions and remediation. Defenders should verify the authenticity of payment confirmation requests and review compensating controls for exposed systems while remediation is scheduled and verified. The CCAvenue Payment Gateway for WooCommerce plugin through 3.1 does not verify that a payment-confirmation request genuinely originates from the payment provider, and derives its verification key from a value that is empty

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.