FlatPress - Stored Cross-Site Scripting via Unescaped Comment and Contact Form Fields (CVE-2026-56785) | HOL Guard CVE

High · CVSS 8.4CVE-2026-56785

FlatPress - Stored Cross-Site Scripting via Unescaped Comment and Contact Form Fields

Answer in brief

CVE-2026-56785 records a High severity (CVSS 8.4) vulnerability in FlatPress - Stored Cross-Site Scripting via Unescaped Comment and Contact Form Fields. The current sources do not mark it as known exploited. The current feed maps FlatPress/FlatPress (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 Jun 23, 2026Updated Sep 24, 2026Source checked Sep 24, 2026First seen by HOL Jun 24, 2026Material review Sep 24, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 8.4
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

CVSS is 8.4. 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 FlatPress/FlatPress (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
FlatPress/FlatPressgeneric	>=0 <10be83c	10be83c

Recommended response

Check inventory. Check lockfiles and deployed manifests for FlatPress/FlatPress.
Review the reported fix. Update FlatPress/FlatPress to 10be83c if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Jun 23, 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
Jun 24, 2026

Sources and claim methodology

Upstream source description

FlatPress contains a stored cross-site scripting vulnerability in comment and contact forms where name, URL, and email fields are rendered without proper output encoding in Smarty templates. Attackers can inject arbitrary HTML and JavaScript through these fields to execute malicious scripts in browsers of viewers including administrators, or bypass URL scheme validation to inject javascript: or data: URIs.

Quoted source text, attributed separately from HOL analysis.