CVE-2026-42716 payever CVE debrief

Who should care

Defenders responsible for WordPress installations with the Payever - WooCommerce Gateway plugin should assess exposure and apply patches or mitigations.

Why it matters

CVE-2026-42716 is a critical unauthenticated PHP Object Injection vulnerability in the Payever - WooCommerce Gateway plugin. Defenders should prioritize verifying exposure and applying patches or mitigations to prevent potential code execution and data breaches.

• Potential code execution on vulnerable systems.
• Possible data breaches due to unauthenticated access.
• Required verification of exposure and patch application.

Technical summary

The Payever - WooCommerce Gateway plugin versions up to 4.8.2 are vulnerable to unauthenticated PHP Object Injection due to inadequate input validation and sanitization. This vulnerability allows attackers to inject malicious PHP objects, potentially leading to code execution and data breaches. The plugin's failure to properly validate user input enables the injection of

Defensive priority

Defenders should prioritize verifying exposure and applying patches or mitigations.

Recommended defensive actions

• Verify exposure by checking if the Payever - WooCommerce Gateway plugin version is 4.8.2 or earlier.
• Apply patches or mitigations provided by the vendor.
• Monitor for potential exploitation attempts.

Evidence notes

The vulnerability has a CVSS score of 9.8 and is considered critical. The CVE record and NVD entry provide details on the vulnerability.

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.