Server crash if running Python 3.10 w/ Sanic 20.12
!!! ONLY APPLIES TO VERSIONS PRIOR TO Sanic v20.12 WHEN USING Python 3.10 !!!
Sanic v20.12 officially supports Python versions 3.6, 3.7, 3.8, and 3.9. However, if you accidentally run it with version 3.10 (which is not supported by Sanic 20.12), your server is prone to crashing on an incoming web request.
Impact
Anyone running Sanic server between 0.1.7 and 20.12 using Python 3.10.
Patches
Workarounds
Use a supported version of Python (v3.6 - v3.9)
References
In asyncio, the explicit passing of a loop argument has been deprecated and will be removed in version 3.10 for the following: ... asyncio.Event
For more information
If you have any questions or comments about this advisory:
- Open an issue in the community forums
- Ping us on the Discord server
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Python (PyPI) | sanic | >= 0.1.7, < 20.12.6 | 20.12.6 |
References
- Weakness (CWE)
-- Platform
- Python (PyPI)
- Package
sanic- Disclosed
- 16.02.2022
- Updated
- 11.10.2026 12:18
Sources and licenses
OSV / GitHub Advisory Database - GHSA-7p79-6x2v-5h88 - CC BY 4.0
Vulnerability history: sanic
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
- 4
- First → latest
- 11.2017 09.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 3
- Medium 1
Disclosures per year
- 2017: 1
- 2018: 0
- 2019: 0
- 2020: 0
- 2021: 0
- 2022: 2
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 1
-
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