Vulnerability · Published May 11, 2026 · Assigned by GitHub_M
CVE-2026-42866Tookie: Arbitrary file write via path traversal in -u username / -U userfile output filename
Medium 6.7
In plain English
A medium-severity path traversal in tookie-osint from Alfredredbird. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 11% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Alfredredbird | tookie-osint | < 4.1fix |
Weakness: CWE-22, CWE-73 · 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