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CVE-2026-56785

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

CVSS 4.0 8.4 HIGHCVSS 3.1 8.2 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-56785

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-56785

Published

FlatPress

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "FlatPress",
                    "product": "FlatPress",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "0",
                            "lessThan": "10be83c",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON