Rails is a web-application framework. There is a possible XSS vulnerability when using the translation helpers in Action Controller. Applications using translation methods like translate, or t on a controller, with a key ending in "_html", a :default key which contains untrusted user input, and the resulting string is used in a view, may be susceptible to an XSS vulnerability. The vulnerability is fixed in 7.1.3.1 and 7.0.8.1.

Affected: RubyGems: actionpack, RubyGems: rails

# Possible XSS Vulnerability in Action Controller

There is a possible XSS vulnerability when using the translation helpers (`translate`, `t`, etc) in Action Controller. This vulnerability has been assigned the CVE identifier CVE-2024-26143.

Versions Affected: >= 7.0.0. Not affected: < 7.0.0 Fixed Versions: 7.1.3.1, 7.0.8.1

Impact ------ Applications using translation methods like `translate`, or `t` on a controller, with a key ending in "_html", a `:default` key which contains untrusted user input, and the resulting string is used in a view, may be susceptible to an XSS vulnerability.

For example, impacted code will look something like this:

```ruby class ArticlesController < ApplicationController def show @message = t("message_html", default: untrusted_input) # The `show` template displays the contents of `@message` end end ```

To reiterate the pre-conditions, applications must:

* Use a translation function from a controller (i.e. _not_ I18n.t, or `t` from a view) * Use a key that ends in `_html` * Use a default value where the default value is untrusted and unescaped input * Send the text to the victim (whether that's part of a template, or a `render` call)

All users running an affected release should either upgrade or use one of the workarounds immediately.

Releases -------- The fixed releases are available at the normal locations.

Workarounds ----------- There are no feasible workarounds for this issue.

Patches ------- To aid users…

ruby3.3-rubygem-actionpack-7.0-7.0.8.4-1.1 on GA media

Affected: Ubuntu:Pro:16.04:LTS: rails, Ubuntu:Pro:18.04:LTS: rails, Ubuntu:Pro:20.04:LTS: rails, Ubuntu:Pro:22.04:LTS: rails, Ubuntu:24.04:LTS: rails, Ubuntu:25.10: rails, Ubuntu:26.04:LTS: rails

Rails is a web-application framework. There is a possible XSS vulnerability when using the translation helpers in Action Controller. Applications using translation methods like translate, or t on a controller, with a key ending in "_html", a :default key which contains untrusted user input, and the resulting string is used in a view, may be susceptible to an XSS vulnerability. The vulnerability is fixed in 7.1.3.1 and 7.0.8.1.

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Ruby on Rails ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen, vertrauliche Informationen offenzulegen oder einen Cross-Site-Scripting-Angriff (XSS) durchzuführen.