CVE-2026-40803
Deferred Deferred - Pending Action

Unauthenticated XSS in Jotform AI Chatbot

Vulnerability report for CVE-2026-40803, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-10

Last updated on: 2026-10-13

Assigner: Patchstack

Description

Unauthenticated Cross Site Scripting (XSS) in Jotform &#8211; AI Chatbot <= 3.8.2 versions.

CVSS Scores

EPSS Scores

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Meta Information

Published
2026-10-10
Last Modified
2026-10-13
Generated
2026-10-19
AI Q&A
2026-10-11
EPSS Evaluated
2026-10-18
NVD
EUVD

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Jotform Jotform – AI Chatbot n/a

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

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Executive Summary

This is an Unauthenticated Cross Site Scripting (XSS) vulnerability affecting Jotform – AI Chatbot plugin versions 3.8.2 and below. It allows attackers to inject malicious scripts into websites without authentication. The flaw requires user interaction, such as clicking a malicious link or submitting a form, to be exploited.

Detection Guidance

Detecting this XSS vulnerability requires checking if the Jotform – AI Chatbot plugin version 3.8.2 or below is installed. Inspect WordPress plugins via the admin dashboard or use commands like 'wp plugin list' in WP-CLI to verify versions. Monitor for unusual script injections in web traffic or form submissions.

Impact Analysis

Attackers could steal visitor data, hijack accounts, or perform other malicious actions on websites using the vulnerable plugin. Users interacting with infected pages may unknowingly execute harmful scripts, leading to compromised sessions or data theft.

Compliance Impact

This vulnerability could lead to data breaches, which may violate GDPR and HIPAA requirements for protecting user data. Organizations using the affected plugin risk non-compliance, potential fines, and reputational damage if exploited.

Mitigation Strategies

Immediately update the Jotform – AI Chatbot plugin to the latest version if available. If no patch exists, apply Patchstack's mitigation rule to block attacks. Consider disabling the plugin temporarily or seek help from a developer/hosting provider. Enable automated vulnerability mitigation tools if using Patchstack.

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