CVE-2017-20192Public exploitNetwork attack vector

Unauthenticated stored XSS via unescaped entry parameters

Published Oct 16, 2024 · Updated Apr 8, 2026

Stored XSS in Strategy11 Formidable Forms before 2.05.03 allows remote attackers to inject scripts through unauthenticated form entries. Entry parameters such as after_html are stored without sufficient input sanitization and later rendered without output escaping. No account is required; the script runs when a victim opens affected form-entry content in a browser.

CVSS severity6.1
Medium
EPSS probability1.03%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Stored XSS in Strategy11 Formidable Forms before 2.05.03 allows remote attackers to inject scripts through unauthenticated form entries. Entry parameters such as after_html are stored without sufficient input sanitization and later rendered without output escaping. No account is required; the script runs when a victim opens affected form-entry content in a browser.

The record

CVE
CVE-2017-20192
Published
Oct 16, 2024
Updated
Apr 8, 2026
Vendor
Business Directory Team
Product
Formidable Forms
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=0 <2.05.03

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Business Directory Team · Formidable Formsversion=0 <2.05.03

Published CVSS scores

8.3WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L
6.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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.

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

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo