OS Command Injection in celery
This affects the package celery before 5.2.2. It by default trusts the messages and metadata stored in backends (result stores). When reading task metadata from the backend, the data is deserialized. Given that an attacker can gain access to, or somehow manipulate the metadata within a celery backend, they could trigger a stored command injection vulnerability and potentially gain further access to the system.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | celery | < 5.2.2 | 5.2.2 |
References
- https://github.com/celery/celery/blob/master/Changelog.rst%23522
- https://snyk.io/vuln/SNYK-PYTHON-CELERY-2314953
- https://github.com/advisories/GHSA-q4xr-rc97-m4xx
- https://nvd.nist.gov/vuln/detail/CVE-2021-23727
- https://github.com/celery/celery/commit/1f7ad7e6df1e02039b6ab9eec617d283598cad6b
- https://github.com/celery/celery
- https://github.com/pypa/advisory-database/tree/main/vulns/celery/PYSEC-2021-858.yaml
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SYXRGHWHD2WWMHBWCVD5ULVINPKNY3P5
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-77, CWE-78- Platform
- Python (PyPI)
- Package
celery- Disclosed
- 29.12.2021
- Updated
- 11.10.2026 11:19
Sources and licenses
OSV / GitHub Advisory Database - PYSEC-2021-858 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-q4xr-rc97-m4xx - CC BY 4.0
Vulnerability history: celery
All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 12.2011 12.2021
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 1
Disclosures per year
- 2017: 0
- 2018: 0
- 2019: 0
- 2020: 0
- 2021: 1
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
earlier: 1
Know which vulnerabilities affect your application
With the DockRay integration and software inventory enabled, DockRay checks reported component versions against known vulnerabilities and notifies you about confirmed matches. Coverage depends on the supported technology and available advisory data.