CVE-2026-95686
HighCVSS 7.2Exploitation Probability (EPSS)
Low risk19th percentile - higher than 19% of all known CVEs
Summary
The Opti-Behavior plugin for WordPress (versions up to and including 1.9.2.1) is vulnerable to stored DOM-based cross-site scripting via the 'targetUrl' parameter. Insufficient input sanitization and output escaping allows an unauthenticated attacker to inject arbitrary web scripts that execute when a user visits the injected page. The ingest endpoint is gated only by a nonce that is publicly emitted to every anonymous visitor.
Risk Assessment
An unauthenticated attacker can execute arbitrary JavaScript in the victim's browser, potentially leading to session theft or account takeover. The risk is high because the nonce is publicly available.
Recommendation
Update the Opti-Behavior plugin to a version newer than 1.9.2.1. Restrict access to the ingest endpoint or disable it if not used.
Other vulnerabilities in Opti-Behavior WordPress plugin
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS