CVE-2026-84279Network attack vector

Unauthenticated stored XSS via output_format parameter

Published Sep 25, 2026 · Updated Sep 25, 2026

Stored cross-site scripting in Radykal Fancy Product Designer 6.5.2 and earlier allows remote attackers to inject scripts via output_format. The Pro Export fpd_pr_export AJAX handler accepts the parameter without sufficient input sanitization or output escaping and stores its content for later rendering. When Pro Export/Genius is enabled, no authentication is required to plant the payload, which executes in a user's browser when the injected page is accessed.

CVSS severityUnavailable
Unscored
EPSS probability0.19%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Radykal Fancy Product Designer 6.5.2 and earlier allows remote attackers to inject scripts via output_format. The Pro Export fpd_pr_export AJAX handler accepts the parameter without sufficient input sanitization or output escaping and stores its content for later rendering. When Pro Export/Genius is enabled, no authentication is required to plant the payload, which executes in a user's browser when the injected page is accessed.

The record

CVE
CVE-2026-84279
Published
Sep 25, 2026
Updated
Sep 25, 2026
Vendor
Radykal
Product
Fancy Product Designer
Classifications
T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 25, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 25, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=6.5.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Radykal · Fancy Product Designerversion=0 <=6.5.2

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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