CVE-2021-32645: Tenancy multi-tenant is an open source multi-domain controller for the Laravel web framework

Routine

MEDIUM 6.1UPGRADE

CVE-2021-32645 is a medium-severity flaw (CVSS 6.1) affecting multi-tenant. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Tenancy multi-tenant is an open source multi-domain controller for the Laravel web framework. 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 `force_https` set to `true` (default: `false`). Version 5.7.2 contains

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.1 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	1.0% (top 37%)
CISA exploited list	No
Weakness	CWE-601
Published	2021-05-27
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: tenancy

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2021-05-27 17:15 UTCPublished CVE record published
2026-06-17 03:53 UTCUpdated Record last modified

tenancy multi-tenant UPGRADE

Affected: >= 5.6.0 and < 5.7.2

Fixed in: 5.7.2

Safe to downgrade to: a release before 5.6.0

1. Check installed version

apt-cache policy multi-tenant || rpm -q multi-tenant || multi-tenant --version

2. UPGRADE to 5.7.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade multi-tenant

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade multi-tenant

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 5.6.0 (Debian / Ubuntu)

apt-cache madison multi-tenant sudo apt install multi-tenant=<VERSION_BEFORE_5.6.0> sudo apt-mark hold multi-tenant

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list multi-tenant sudo dnf downgrade multi-tenant-<VERSION_BEFORE_5.6.0> sudo dnf versionlock add multi-tenant

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2021-32645?

multi-tenant: upgrade to 5.7.2. Exact commands for each OS are on this page.

Is CVE-2021-32645 being exploited?

CVE-2021-32645 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2021-32645 affect?

CVE-2021-32645 affects multi-tenant. Severity is medium (CVSS 6.1). Tenancy multi-tenant is an open source multi-domain controller for the Laravel web framework. 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

How urgent is CVE-2021-32645?

Priority 37/100. No elevated risk signals yet.

Software pages

Laravel vulnerabilities

References

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