Code injection via unsafe YAML loading
Impact
Sockeye uses YAML to store model and data configurations on disk. Versions below 2.3.24 use unsafe YAML loading, which can be made to execute arbitrary code embedded in config files.
An attacker can add malicious code to the config file of a trained model and attempt to convince users to download and run it. If users run the model, the embedded code will run locally.
Patches
The issue is fixed in version 2.3.24 and above by #964.
For more information
If you have any questions or comments about this advisory:
- Open an issue in awslabs/sockeye
- Email us at sockeye-dev
Attribution
This vulnerability was reported by Masatoshi Yoshizawa of yamory Security Team.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | sockeye | < 2.3.24 | 2.3.24 |
References
- https://github.com/awslabs/sockeye/security/advisories/GHSA-ggmr-44cv-24pm
- https://github.com/awslabs/sockeye/releases/tag/2.3.24
- https://github.com/awslabs/sockeye/pull/964
- https://nvd.nist.gov/vuln/detail/CVE-2021-43811
- https://github.com/awslabs/sockeye
- https://github.com/pypa/advisory-database/tree/main/vulns/sockeye/PYSEC-2021-848.yaml
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-94- Platform
- Python (PyPI)
- Package
sockeye- Disclosed
- 08.12.2021
- Updated
- 11.10.2026 13:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2021-848 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-ggmr-44cv-24pm - CC BY 4.0
Vulnerability history: sockeye
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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