CVE-2026-95809

7.2High

Published 16 Oct 2026 · NVD status: Deferred · AI triage by gemini-3.8-flash

7.2High

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Impact: Limited impact
Weakness: CWE-79

Impact

Unauthenticated attackers can inject persistent malicious scripts that execute in the browsers of users viewing analytics pages. Attackers only need network access to fetch a public nonce via an AJAX call and submit the payload.

Root cause

The plugin fails to sanitize and escape the 'country_name' location parameter in heatmap recording endpoints before rendering it in the DOM.

Affected systems

Opti-Behavior WordPress plugin versions up to, and including, 1.9.2.1

CVSS v3.1 · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Fix & remediation

Upgrade Opti-Behavior to a version newer than 1.9.2.1 if available, or deactivate the plugin immediately until a patch is released.

shell

$ wp plugin deactivate opti-behavior

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD 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

Source: nvd.nist.gov/vuln/detail/CVE-2026-95809