CVE-2026-84151
LowCVSS 3.5Exploitation Probability (EPSS)
Low risk5th percentile - higher than 5% of all known CVEs
Summary
The Post Grid WordPress plugin before version 7.9.5 does not limit an expansion of the WordPress allowed-HTML list to its own markup and applies it site-wide. Users with the Contributor role and above can store iframe, style, and input elements that are normally stripped from their content, leading to HTML injection (phishing frames, CSS defacement, and spoofed input forms) that renders to any visitor and to administrators reviewing the content.
Risk Assessment
The organization is exposed to phishing attacks, website defacement, and form spoofing, which can lead to user data theft and loss of trust in the website.
Recommendation
Immediately update the Post Grid plugin to version 7.9.5 or later and restrict Contributor role permissions if possible.
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Original NVD description (English source)
The Post Grid WordPress plugin before 7.9.5 does not limit an expansion of the WordPress allowed-HTML list to its own markup and applies it site-wide, allowing users with the Contributor role and above to store iframe, style and input elements that are normally stripped from their content, leading to HTML injection (phishing frames, CSS defacement and spoofed input forms) that renders to any visitor and to administrators reviewing the content.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

