PT-2026-51608 · Flatpress · Flatpress

Dilipkumar Choudhary + 1 · Published 2026-06-23 · Updated 2026-06-23 · CVE-2026-56785

Mitre

CVSS v3.1

8.2

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

FlatPress versions prior to commit 10be83c, 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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-56785

Affected Products

Flatpress

References · 4

• https://github.com/flatpressblog/flatpress/commit/10be83cbaac5ce0e51250b9d57de7f257b8f34f8 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-56785 · Security Note
• https://github.com/dilipk5/flatpressd-cms-sxss · Vendor Advisory
• https://vulncheck.com/advisories/flatpress-stored-cross-site-scripting-via-unescaped-comment-and-contact-form-fields · Note