CVE-2026-12568 Arbitrary File Write in postman_download module
Attackers can write arbitrary files to the user's system via path traversal in the postman_download module of BBOT.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-12568?
CVE-2026-12568 is a medium-severity path traversal vulnerability in Black Lantern Security BBOT, published on 17 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The postman_download module uses the workspace name field from the Postman API to construct the local directory path without sanitization. If a malicious workspace has a name containing path traversal characters, pathlib resolves the path outside the intended output directory, allowing an attacker to write arbitrary files to the user's system.
Weakness: CWE-22
Which versions are affected by CVE-2026-12568?
3 open source packages ship an affected version, including bbot.
| Package | Affected | Fixed in |
|---|---|---|
bbot PyPI | From 2.1.0 | 2.8.6 |
bbot PyPI | From 2.1.0 | 2.8.6 |
bbot PyPI | From 2.1.0 | 2.8.6 |
How do I fix CVE-2026-12568?
Upgrade bbot to 2.8.6 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-12568 being exploited?
There is no known exploitation of CVE-2026-12568 in the wild and no public exploit code.
Sources
Also known as GHSA-m54h-vhf9-3w3m, PYSEC-2026-2393.