GHSA-9822-6m93-xqf4
MEDIUMRails has possible XSS Vulnerability in Action Controller
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
actionpack💎actionpack💎rails💎railsReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects RubyGems packages — download data is not available via public APIs for these ecosystems.
Description
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:
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
tfrom 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
rendercall)
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 who aren't able to upgrade immediately we have provided patches for the two supported release series. They are in git-am format and consist of a single changeset.
- 7-0-translate-xss.patch - Patch for 7.0 series
- 7-1-translate-xss.patch - Patch for 7.1 series
Credits
Thanks to ooooooo_q for the patch and fix!
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 💎RubyGems | actionpack | ≥ 7.0.0&&< 7.0.8.1 | 7.0.8.1 |
| 💎RubyGems | actionpack | ≥ 7.1.0&&< 7.1.3.1 | 7.1.3.1 |
| 💎RubyGems | rails | ≥ 7.0.0&&< 7.0.8.1 | 7.0.8.1 |
| 💎RubyGems | rails | ≥ 7.1.0&&< 7.1.3.1 | 7.1.3.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for actionpack. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update actionpack to 7.0.8.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-9822-6m93-xqf4 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-9822-6m93-xqf4 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-9822-6m93-xqf4. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-9822-6m93-xqf4 in your dependencies?
O3 detects GHSA-9822-6m93-xqf4 across RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.