CVE-2026-12565 Path Traversal (Zip-Slip) in unarchive module
Attackers can exploit path traversal in BBOT's unarchive module to write files outside the extraction directory, potentially leading to code execution on systems with older tar versions.
- 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-2026-12565?
CVE-2026-12565 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 unarchive internal module's archive extraction commands perform no code-level validation on extracted file paths, relying entirely on the behavior of external tools (e.g. GNU tar) which varies by platform. While CVE-2025-10284 addressed git-specific RCE vectors, the underlying archive extraction path traversal was never fixed. On systems with GNU tar < 1.34 (Ubuntu 20.04, Debian Buster, CentOS 7, many Docker base images), a malicious archive can write files outside the intended extraction directory.
Weakness: CWE-22
Which versions are affected by CVE-2026-12565?
3 open source packages ship an affected version, including bbot.
| Package | Affected | Fixed in |
|---|---|---|
bbot PyPI | From 2.3.1 | 2.8.5 |
bbot PyPI | From 2.3.1 | 2.8.5 |
bbot PyPI | From 2.3.1 | 2.8.5 |
How do I fix CVE-2026-12565?
Upgrade bbot to 2.8.5 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-12565 being exploited?
There is no known exploitation of CVE-2026-12565 in the wild and no public exploit code.
Sources
Also known as GHSA-3vgw-585j-4m45, PYSEC-2026-2392.