CVE-2026-35558

import pyodbc # PoC for CVE-2026-35558 # This script demonstrates a potentially malicious connection string # that might trigger the improper neutralization vulnerability. # Attempting to inject a command via the connection parameters malicious_connection_string = ( "DRIVER={Amazon Athena ODBC Driver};" "UID=user;" "PWD=password;" "AWSRegion=us-east-1;" "S3OutputLocation=s3://bucket/path;" # Injecting special characters to test neutralization "WorkaroundParams=;$(malicious_command)" ) try: # In a real exploit scenario, triggering the connection with this string # would lead to code execution or redirection in vulnerable versions. conn = pyodbc.connect(malicious_connection_string) print("Connection established - Vulnerability may be triggered") except Exception as e: print(f"Connection failed or error occurred: {e}")

{"cve": {"id": "CVE-2026-35558", "sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "published": "2026-04-03T21:17:11.710", "lastModified": "2026-04-14T16:17:04.143", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper neutralization of special elements in the authentication components in Amazon Athena ODBC driver before 2.1.0.0 might allow a threat actor to execute arbitrary code or redirect authentication flows by using specially crafted connection parameters that are processed by the driver during user-initiated authentication.\n\nTo remediate this issue, users should upgrade to version 2.1.0.0."}], "metrics": {"cvssMetricV40": [{"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:N/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": 7.3, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "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:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "baseScore": 7.8, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-77"}]}], "configurations": [{"operator": "AND", "nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:amazon:athena_odbc:*:*:*:*:*:*:*:*", "versionEndExcluding": "2.1.0.0", "matchCriteriaId": "5627F10C-7180-4F8A-81D4-A5AB4D42A968"}]}, {"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": false, "criteria": "cpe:2.3:o:apple:macos:-:*:*:*:*:*:*:*", "matchCriteriaId": "387021A0-AF36-463C-A605-32EA7DAC172E"}, {"vulnerable": false, "criteria": "cpe:2.3:o:linux:linux_kernel:-:*:*:*:*:*:*:*", "matchCriteriaId": "703AF700-7A70-47E2-BC3A-7FD03B3CA9C1"}, {"vulnerable": false, "criteria": "cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*", "matchCriteriaId": "A2572D17-1DE6-457B-99CC-64AFD54487EA"}]}]}], "references": [{"url": "https://aws.amazon.com/security/security-bulletins/2026-013-aws/", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "tags": ["Vendor Advisory"]}, {"url": "https://docs.aws.amazon.com/athena/latest/ug/odbc-v2-driver-release-notes.html", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "tags": ["Release Notes"]}, {"url": "https://downloads.athena.us-east-1.amazonaws.com/drivers/ODBC/v2.1.0.0/Linux/AmazonAthenaODBC-2.1.0.0.rpm", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "tags": ["Patch", "Product"]}, {"url": "https://downloads.athena.us-east-1.amazonaws.com/drivers/ODBC/v2.1.0.0/Mac/Intel/AmazonAthenaODBC-2.1.0.0_x86.pkg", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "tags": ["Patch", "Product"]}, {"url": "https://downloads.athena.us-east-1.amazonaws.com/drivers/ODBC/v2.1.0.0/Mac/arm/AmazonAthenaODBC-2.1.0.0_arm.pkg", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "tags": ["Patch", "Product"]}, {"url": "https://downloads.athena.us-east-1.amazonaws.com/drivers/ODBC/v2.1.0.0/Windows/AmazonAthenaODBC-2.1.0.0.msi", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "tags": ["Patch", "Product"]}]}}