CVE-2026-95686
Received Received - Intake

Stored DOM-Based XSS in Opti-Behavior WordPress Plugin

Publication date: 2026-10-16

Last updated on: 2026-10-16

Assigner: Wordfence

Description
The Opti-Behavior – Self-Hosted Heatmaps, Session Recordings, Funnels, A/B Testing & Smart Insights plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'targetUrl' parameter in all versions up to, and including, 1.9.2.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The ingest endpoint is gated only by a nonce that is publicly emitted to every anonymous visitor on tracked pages via optiBehaviorHeatmapConfig.nonce, meaning no account or authentication of any kind is required to write the malicious payload.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-10-16
Last Modified
2026-10-16
Generated
2026-10-16
AI Q&A
2026-10-16
EPSS Evaluated
N/A
NVD
CVE-2026-95686
EUVD
EUVD-2026-102664

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
optiuser Opti-Behavior – Self-Hosted Heatmaps, Funnels, A/B Testing & Smart Insights 0

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
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

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a Stored DOM-Based Cross-Site Scripting (XSS) vulnerability in the Opti-Behavior WordPress plugin. It allows unauthenticated attackers to inject malicious scripts via the 'targetUrl' parameter due to insufficient input sanitization and output escaping. The injected scripts execute when users access the compromised page.

Detection Guidance

This vulnerability involves Stored DOM-Based Cross-Site Scripting via the 'targetUrl' parameter in the Opti-Behavior WordPress plugin. Detection requires checking for suspicious payloads in stored data or monitoring network traffic for injected scripts targeting the 'targetUrl' parameter.

Impact Analysis

An attacker could steal user sessions, redirect to malicious sites, or perform actions on behalf of users. Since no authentication is required to exploit this, any visitor to a site using the vulnerable plugin could be affected.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Organizations using this plugin may face compliance violations if user data is compromised.

Mitigation Strategies

Immediately update the Opti-Behavior plugin to the latest version beyond 1.9.2.1 to address the Stored DOM-Based Cross-Site Scripting vulnerability. Disable the plugin if updates are unavailable or until patched.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-95686. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart