Actionpack has possible cross-site scripting vulnerability via User Supplied Values to redirect_to

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

4.0 · CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

EPSS

• CVE-2023-28362: 0.33% estimated exploitation activity in the next 30 days; percentile 26.55 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

The redirectto 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. This vulnerability has been assigned the CVE identifier CVE-2023-28362. Versions Affected: All. Not affected: None Fixed Versions: 7.0.5.1, 6.1.7.4 Impact This introduces the potential for a Cross-site-scripting (XSS) payload to be delivered on the now static redirection page. Note that this both requires user interaction and for a Rails app to be configured to allow redirects to external hosts (defaults to false in Rails = 7.0.x). Releases The FIXED releases are available at the normal locations. Workarounds Avoid providing user supplied URLs with arbitrary schemes to the redirectto method.

Published by the source

29 Jun 2023, 15:03 UTC

Last modified by the source

5 May 2025, 17:10 UTC

Source last checked

26 Oct 2026, 15:49 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-4g8v-vg43-wpgf

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# Patch Next advisory brief: CVE-2023-28362

Advisory: Actionpack has possible cross-site scripting vulnerability via User Supplied Values to redirect_to
IDs: CVE-2023-28362, GHSA-4g8v-vg43-wpgf
Record: https://patchnext.com/advisories/cve-2023-28362 (revision 1, source checked 26 Oct 2026, 15:49 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.0)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: actionpack 7.0.5.1, 6.1.7.4. A vendor fix does not mean a deployment is fixed.

## Affected components
- RubyGems actionpack: affected < 6.1.7.4; >= 7.0.0, < 7.0.5.1; fixed in 7.0.5.1, 6.1.7.4

## Suggested inspection (read-only)
- RubyGems actionpack: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on actionpack.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-4g8v-vg43-wpgf (GitHub-reviewed advisory GHSA-4g8v-vg43-wpgf lists affected ranges: RubyGems actionpack >=0 =7.0.0 <7.0.5.1)

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