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CVE-2026-56785

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

Published: Jun 23, 2026Updated: Jun 25, 2026 Sources: CVE List NVDCWE-79
8.2HIGH
NVD MITRE
EPSS Score
0.2%
Top 84.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:HI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

FlatPress
oss-project
FlatPressOn-prem
Web & CMS Plugins / cms-core

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/dilipk5/flatpressd-cms-sxss
github.com
https://github.com/flatpressblog/flatpress/commit/10be83cbaac5ce0e51250b9d57de7f257b8f34f8
github.com
https://www.vulncheck.com/advisories/flatpress-stored-cross-site-scripting-via-unescaped-comment-and-contact-form-fields
vulncheck.com

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