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CVE-2026-95809— Opti-Behavior <= 1.9.2.1 - Unauthenticated Stored DOM-Based Cross-Site Scripting via 'country_name' Location Parameter

Quick assessment

Affected
optiuser Opti-Behavior – Self-Hosted Heatmaps, Funnels, A/B Testing & Smart Insights
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 插件"Opti-Behavior – Self-Hosted Heatmaps, Session Recordings, Funnels, A/B Testing & Smart Insights"在 1.9.2.1 及以下所有版本中存在存储型 DOM 跨站脚本（Stored DOM-Based XSS）漏洞。该漏洞源于对输入数据的净化不足以及对输出内容转义不当，具体涉及 位置参数。此漏洞允许未经身份验证的攻击者在页面中注入任意 Web 脚本，当用户访问被注入的页面时，这些脚本将被执行。此外，该

CVSS 7.2 · High EPSS 0.25% · P15

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
optiuser Opti-Behavior – Self-Hosted Heatmaps, Funnels, A/B Testing & Smart Insights ≤ 1.9.2.1 affected
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I. Basic Information for CVE-2026-95809

Vulnerability Information
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Vulnerability Title
Opti-Behavior <= 1.9.2.1 - Unauthenticated Stored DOM-Based Cross-Site Scripting via 'country_name' Location Parameter
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
optiuser Opti-Behavior – Self-Hosted Heatmaps, Funnels, A/B Testing & Smart Insights 0 ~ 1.9.2.1 -

II. Public POCs for CVE-2026-95809

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III. Intelligence Information for CVE-2026-95809

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Patches & Fixes for CVE-2026-95809 (1)

Vendor Advisories for CVE-2026-95809 (1)

Vendor Pages for CVE-2026-95809 (1)

IV. Related Vulnerabilities

Same product: Opti-Behavior – Self-Hosted Heatmaps, Funnels, A/B Testing & Smart Insights
Same vendor: optiuser
Same weakness: CWE-79

V. Comments for CVE-2026-95809

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