CVE-2023-3501Public exploitNetwork attack vector

Stored XSS via unescaped form settings

Published Aug 30, 2023 · Updated Apr 23, 2025

Stored XSS in FormCraft – Form Builder before 1.2.7 allows remote authenticated users to execute scripts through saved form settings. Custom-message text and email-field labels accept script markup and later render it without sanitization or output escaping. Administrator access is required, and a viewer must open the affected form or submission for the stored script to run in that browser.

CVSS severity4.8
Medium
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in FormCraft – Form Builder before 1.2.7 allows remote authenticated users to execute scripts through saved form settings. Custom-message text and email-field labels accept script markup and later render it without sanitization or output escaping. Administrator access is required, and a viewer must open the affected form or submission for the stored script to run in that browser.

The record

CVE
CVE-2023-3501
Published
Aug 30, 2023
Updated
Apr 23, 2025
Vendor
Formcrafts
Product
FormCraft – Form Builder
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 30, 2023CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record 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 <1.2.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Formcrafts · FormCraft – Form Builderversion=0 <1.2.7

Published CVSS scores

4.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:H/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

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

Technologies

Your stack

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Your stack

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