CVE-2026-84151
The Post Grid < 7.9.5 - Contributor+ Stored HTML/iframe Injection via wp_kses_post Allow-List Widening
- State
- Published
- Severity
- 3.5 Low
- Published
- Sep 24, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 1, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 3.5 Low | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N | CISA-ADP |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
The Post GridUnknown |
|
References
- https://wpscan.com/vulnerability/6601a305-a76f-40fe-8d78-c6a33a66d5f3/exploitvdb-entrytechnical-description
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