CVE-2026-34673

# Proof of Concept (PoC) for CVE-2026-34673 # This script demonstrates how an uncontrolled resource consumption # vulnerability might be triggered against a vulnerable application. # Note: This is a conceptual simulation. Actual exploitation requires # interaction with the specific CAI Content Credentials API or interface. import sys def simulate_resource_exhaustion(): """ Simulates the DoS condition by exhausting memory. In a real scenario, this would be triggered by a specific malformed input processed by the vulnerable CAI Content Credentials library. """ print("[*] Starting PoC for CVE-2026-34673...") print("[*] Attempting to exhaust system resources via vulnerable component...") try: # Simulating the allocation of resources without checks # This represents the missing control in the vulnerable software resource_hog = [] while True: # Allocating large chunks of data to simulate the consumption resource_hog.append("A" * 1000000) # 1MB allocation print(f"[+] Current memory usage: {sys.getsizeof(resource_hog) / (1024 * 1024):.2f} MB") except MemoryError: print("[!] Memory limit reached. Application denial-of-service triggered.") except Exception as e: print(f"[!] An unexpected error occurred: {e}") if __name__ == "__main__": simulate_resource_exhaustion()

{"cve": {"id": "CVE-2026-34673", "sourceIdentifier": "[email protected]", "published": "2026-05-12T20:16:37.920", "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 Uncontrolled Resource Consumption vulnerability that could lead to application denial-of-service. An attacker could exploit this vulnerability to exhaust system resources, resulting in an application 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-400"}]}], "references": [{"url": "https://helpx.adobe.com/security/products/content-authenticity-sdk/apsb26-53.html", "source": "[email protected]"}]}}