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Medium, CVSS 4.3

Open Redirect

CVE-2021-32645GHSA-4r8q-gv9j-3xx6

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (hyn/multi-tenant 5.7.2), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
4.3 · CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
EPSS
  • CVE-2021-32645: 1.02% estimated exploitation activity in the next 30 days; percentile 63.44 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Impact In some situations, it is possible to have open redirects where users can be redirected from your site to any other site using a specially crafted URL. This is only the case for installations where the default Hostname Identification is used and the environment uses tenants that have forcehttps set to true (default: false) Patches Version 5.7.2 contains the relevant patches to fix this bug. Stripping the URL from special characters to prevent specially crafted URL's from being redirected to. Workarounds There is a simple way to work around the security issue - Set the forcehttps to every tenant to false References https://nvd.nist.gov/vuln/detail/CVE-2018-11784 For more information If you have any questions or comments about this advisory: Contact us in Discord: https://tenancy.dev/chat

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-4r8q-gv9j-3xx6

Agent brief

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# Patch Next advisory brief: CVE-2021-32645

Advisory: Open Redirect
IDs: CVE-2021-32645, GHSA-4r8q-gv9j-3xx6
Record: https://patchnext.com/advisories/cve-2021-32645 (revision 1, source checked 26 Oct 2026, 14:01 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 4.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: hyn/multi-tenant 5.7.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist hyn/multi-tenant: affected >= 5.6.0, < 5.7.2; fixed in 5.7.2

## Suggested inspection (read-only)
- Packagist hyn/multi-tenant: 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 hyn/multi-tenant.
- 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-4r8q-gv9j-3xx6 (GitHub-reviewed advisory GHSA-4r8q-gv9j-3xx6 lists affected ranges: Packagist hyn/multi-tenant >=5.6.0 <5.7.2)

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