optiuser Opti-Behavior Plugin up to 1.9.2.1 on WordPress Heatmap Recording Endpoint country_name cross site scripting

Summaryinfo

A vulnerability labeled as problematic has been found in optiuser Opti-Behavior Plugin up to 1.9.2.1. This impacts an unknown function of the component Heatmap Recording Endpoint. Executing a manipulation of the argument country_name can lead to cross site scripting. The identification of this vulnerability is CVE-2026-95809. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in optiuser Opti-Behavior Plugin up to 1.9.2.1. It has been declared as problematic. This vulnerability affects an unknown part of the component Heatmap Recording Endpoint. The manipulation of the argument country_name with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. CVE summarizes:

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.

The advisory is shared for download at wordfence.com. This vulnerability was named CVE-2026-95809 since 09/22/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• optiuser

Name

• Opti-Behavior Plugin

Version

• 1.9.2.0
• 1.9.2.1

CPE 2.3info

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CPE 2.2info

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