CVE-2026-39738 Aman CVE debrief

Who should care

Defenders responsible for WordPress installations using the FunnelKit Automations plugin, especially those with versions 3.8.6.1 or earlier, should assess exposure and prioritize mitigation.

Why it matters

CVE-2026-39738 is a critical vulnerability in the FunnelKit Automations plugin for WordPress, allowing for Object Injection. Defenders should prioritize patching and implement additional security measures to mitigate potential impacts on confidentiality, integrity, and availability.

• Potential unauthorized access to sensitive data due to Object Injection.
• Possible disruption of service through exploitation of deserialization vulnerability.
• Risk of arbitrary code execution if vulnerability is exploited.
• Need for verification of current version and exposure to this vulnerability.

Technical summary

The FunnelKit Automations plugin for WordPress is vulnerable to Object Injection due to deserialization of untrusted data. This issue affects versions from n/a through 3.8.6.1 and has been assigned a CVSS score of 9.8, indicating critical severity. The vulnerability arises from the plugin's insecure handling of serialized data, which could allow attackers to inject malicious objects. Defenders should prioritize patching or mitigating this vulnerability as it could lead to significant impacts on confidentiality, integrity, and availability if exploited. Additional

Defensive priority

Defenders should prioritize patching or mitigating this vulnerability as it could lead to significant impacts on confidentiality, integrity, and availability if exploited.

Recommended defensive actions

• Patch or update the FunnelKit Automations plugin to a version beyond 3.8.6.1.
• Implement additional security measures to monitor and restrict deserialization of untrusted data.
• Conduct thorough inventory checks to identify and mitigate potential exposure.

Evidence notes

The CVE record and NVD detail page provide information on this vulnerability, including its CVSS score and affected versions. However, further details on exploitation or impact are limited.

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.