CVE-2026-33310 Intake has a Command Injection via shell() Expansion in Parameter Defaults
Attackers can execute arbitrary commands on the host system by tricking users into loading a malicious catalog YAML file in the Intake library.
- 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-2026-33310?
CVE-2026-33310 is a high-severity command injection vulnerability in intake, published on 24 Mar 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
Intake is a package for finding, investigating, loading and disseminating data. Prior to version 2.0.9, the shell() syntax within parameter default values appears to be automatically expanded during the catalog parsing process. If a catalog contains a parameter default such as shell(<command>), the command may be executed when the catalog source is accessed. This means that if a user loads a malicious catalog YAML, embedded commands could execute on the host system. Version 2.0.9 mitigates the issue by making getshell False by default everywhere.
Which versions are affected by CVE-2026-33310?
3 open source packages ship an affected version, including intake. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
intake PyPI | All versions to 2.0.9 | None |
intake PyPI | All versions to 2.0.9 | None |
intake PyPI | All versions | 2.0.9 |
Linux distribution packages (1)
python-intake openSUSE:Tumbleweed | All versions | 2.0.9-1.1 |
Products include Intake Intake.
How do I fix CVE-2026-33310?
Upgrade intake to 2.0.9 or later.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-33310 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33310 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-37g4-qqqv-7m99, PYSEC-2026-2185, openSUSE-SU-2026:10426-1.