CVE-2021-21416: django-registration is a user registration package for Django

Q: How do I fix CVE-2021-21416?

django-registration: upgrade to 3.1.2. Exact commands for each OS are on this page.

Q: Is CVE-2021-21416 being exploited?

CVE-2021-21416 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2021-21416 affect?

CVE-2021-21416 affects django-registration. Severity is low (CVSS 3.7). django-registration is a user registration package for Django. The django-registration package provides tools for implementing user-account registration flows in the Django web framework. In django-registration prior to 3.1.2, the base user

Q: How urgent is CVE-2021-21416?

Priority 22/100. No elevated risk signals yet.

Routine

LOW 3.7UPGRADE

CVE-2021-21416 is a low-severity flaw (CVSS 3.7) affecting django-registration. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

django-registration is a user registration package for Django. The django-registration package provides tools for implementing user-account registration flows in the Django web framework. In django-registration prior to 3.1.2, the base user-account registration view did not properly apply filters to sensitive data, with the result that sensitive data could be included in error reports rather than removed automatically by Django. Triggering this r

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	3.7 (Low)
Attack vector	Local
Attack complexity	High
Privileges needed	High
User interaction	Required
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-209
Published	2021-04-01
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: django-registration project

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

Am I affected?

Timeline

2021-04-01 22:15 UTCPublished CVE record published
2026-06-17 03:35 UTCUpdated Record last modified

django-registration project django-registration UPGRADE

Affected: < 3.1.2

Fixed in: 3.1.2

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy django-registration || rpm -q django-registration || django-registration --version

2. UPGRADE to 3.1.2 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade django-registration

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade django-registration

Note

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

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-2021-21416?

django-registration: upgrade to 3.1.2. Exact commands for each OS are on this page.

Is CVE-2021-21416 being exploited?

CVE-2021-21416 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-2021-21416 affect?

CVE-2021-21416 affects django-registration. Severity is low (CVSS 3.7). django-registration is a user registration package for Django. The django-registration package provides tools for implementing user-account registration flows in the Django web framework. In django-registration prior to 3.1.2, the base user

How urgent is CVE-2021-21416?

Priority 22/100. No elevated risk signals yet.

Software pages

Django vulnerabilities

References

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