CVE-2026-42866 MEDIUM

CVE-2026-42866: Tookie: Arbitrary file write via path traversal in -u username / -U userfile output filename

Vendor Alfredredbird
Product tookie-osint
Weakness CWE-22 · Path traversal
Published May 11, 2026
Last update May 11, 2026

CVSS base score

6.7/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Tookie is a advanced OSINT information gathering tool. Prior to 4.1fix, modules/modules.py's write_txt, write_csv, write_json, and (commented-but-shipping) scan_file helpers open their output as open(f"{user}.<ext>"), where user comes unsanitized from the -u CLI flag or any line of a -U usernames file. A username that contains path-separator sequences (.., /, \, or an absolute path) causes tookie-osint to write the scan output to an arbitrary path the invoking user has write permission for. This vulnerability is fixed in 4.1fix.

Key dates

02Disclosure timeline

May 11, 2026 CVE published
May 11, 2026 Record updated