CVE-2026-56785
HIGHFlatPress - Stored Cross-Site Scripting via Unescaped Comment and Contact Form Fields
Title source: cnaDescription
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.
References (3)
Core 3
Core References
Patch patch
https://github.com/flatpressblog/flatpress/commit/10be83cbaac5ce0e51250b9d57de7f257b8f34f8
Vendor Advisory vendor-advisory
https://github.com/dilipk5/flatpressd-cms-sxss
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/flatpress-stored-cross-site-scripting-via-unescaped-comment-and-contact-form-fields
Scores
CVSS v3
8.2
EPSS
0.0024
EPSS Percentile
15.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (1)
FlatPress/FlatPress
< 10be83c
Published
Jun 23, 2026
Tracked Since
Jun 24, 2026