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External Control of File Name or Path

CVE-2026-43891

High
7.5/10

Summary

The vulnerability is caused by trusting attacker-controlled snapshot paths restored from backup files. The vulnerable flow starts in the backup restore logic. When a backup ZIP is restored, the application extracts the archive and copies each restored watch UUID directory directly into the live datastore using shutil.copytree(entry.path, dst_dir). This preserves attacker-controlled files inside the restored watch directory, including history.txt. This affects versions prior to 0.55.1.

  • LOW
  • NETWORK
  • NONE
  • UNCHANGED
  • NONE
  • NONE
  • HIGH
  • NONE

CWE-73 - External Control of File Name or Path

The software allows user input to control or influence paths or file names that are used in filesystem operations.

References

Advisory Timeline

  • Published