CVE-2026-6742 mdempfle CVE debrief

Who should care

Users of the Advanced iFrame plugin for WordPress, particularly those with contributor-level access and above, should be aware of this vulnerability and take steps to mitigate it. This includes reviewing the plugin's configuration and ensuring that it is properly updated or patched. Additionally, users should monitor for suspicious activity and implement compensating controls as needed.

Technical summary

The Advanced iFrame plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'additional' parameter in all versions up to, and including, 2026.1. The vulnerability is due to insufficient input sanitization and output escaping, allowing authenticated attackers with contributor-level access and above to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The vulnerability can be exploited by injecting malicious scripts into the 'additional' parameter, which can then be executed by users who access the affected pages.

Defensive priority

Medium priority, as the vulnerability requires contributor-level access and above, but can still have significant impact if exploited.

Recommended defensive actions

• Update the Advanced iFrame plugin to a version that is not vulnerable
• Implement input sanitization and output escaping for the 'additional' parameter
• Monitor for suspicious activity and implement compensating controls
• Consider implementing a web application firewall to detect and prevent attacks
• Review and update the plugin's configuration to prevent exploitation
• Perform regular security audits and vulnerability assessments
• Implement a change management process to ensure timely patching of vulnerable plugins

Evidence notes

The CVE record was published on 2026-07-08T12:17:20.893Z and has not been modified since then. The NVD entry is currently Deferred. There is no additional information available about the vulnerability beyond what is provided in the CVE record and NVD entry. Users should verify the affected versions and configurations of the Advanced iFrame plugin for WordPress to determine if they are vulnerable.

Official resources