The Post Grid < 7.9.5 - Contributor+ Stored HTML/iframe Injection via wp_kses_post Allow-List Widening (CVE-2026-84151) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-84151

The Post Grid < 7.9.5 - Contributor+ Stored HTML/iframe Injection via wp_kses_post Allow-List Widening

Answer in brief

CVE-2026-84151 records a Unknown severity vulnerability in The Post Grid < 7.9.5 - Contributor+ Stored HTML/iframe Injection via wp_kses_post Allow-List Widening. The current sources do not mark it as known exploited. The current feed maps Unknown/The Post Grid (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 24, 2026Updated Sep 24, 2026Source checked Sep 24, 2026First seen by HOL Sep 24, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Unknown/The Post Grid (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Unknown/The Post Gridgeneric	>=0 <7.9.5	7.9.5

Recommended response

Check inventory. Check lockfiles and deployed manifests for Unknown/The Post Grid.
Review the reported fix. Update Unknown/The Post Grid to 7.9.5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 24, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 24, 2026

Sources and claim methodology

Source referencewpscan.com

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.