CVE-2026-95809

high

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 'country_name' Location 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 heatmap recording endpoint accepts unauthenticated requests protected only by a nonce that any visitor can freely obtain via the public opti_behavior_refresh_nonces AJAX action, removing any practical barrier to injecting the malicious payload.

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/6c631593-4857-46c8-80b3-d028524cb86c?source=cve

https://plugins.trac.wordpress.org/changeset/3738510/opti-behavior/trunk/assets/js/metabox-analytics.js

https://plugins.trac.wordpress.org/browser/opti-behavior/tags/1.9.0/includes/class-opti-behavior-heatmap-session.php#L369

https://plugins.trac.wordpress.org/browser/opti-behavior/tags/1.9.0/assets/js/metabox-analytics.js#L668

https://plugins.trac.wordpress.org/browser/opti-behavior/tags/1.9.0/admin/class-opti-behavior-heatmap-post-metabox.php#L1498

https://plugins.trac.wordpress.org/browser/opti-behavior/tags/1.9.0/admin/class-opti-behavior-heatmap-ajax-handler.php#L2656

https://plugins.trac.wordpress.org/browser/opti-behavior/tags/1.9.0/admin/class-opti-behavior-heatmap-ajax-handler.php#L1603

https://plugins.svn.wordpress.org/opti-behavior/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-102668

Details

Source: Mitre, NVD

Published: 2026-10-16

Updated: 2026-10-16

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 7.2

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Severity: High

EPSS

EPSS: 0.00247