How severe is CVE-2022-42731?

CVE-2022-42731 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2022-42731 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-42731?

CVE-2022-42731 affects Django-mfa2 Project Django-mfa2. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-42731?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-42731 published?

CVE-2022-42731 was published on 2022-10-11 and last updated on 2026-06-17.

CVE-2022-42731

CVE-2022-42731 is a high-severity vulnerability in Django-mfa2 Project Django-mfa2 with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-294.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-294
Affected product: Django-mfa2 Project Django-mfa2
Published: 2022-10-11
Last modified: 2026-06-17

Description

mfa/FIDO2.py in django-mfa2 before 2.5.1 and 2.6.x before 2.6.1 allows a replay attack that could be used to register another device for a user. The device registration challenge is not invalidated after usage.

Frequently asked questions

What is CVE-2022-42731?: mfa/FIDO2.py in django-mfa2 before 2.5.1 and 2.6.x before 2.6.1 allows a replay attack that could be used to register another device for a user. The device registration challenge is not invalidated after usage.
How severe is CVE-2022-42731?: CVE-2022-42731 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2022-42731 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-42731?: CVE-2022-42731 affects Django-mfa2 Project Django-mfa2. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-42731?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-42731 published?: CVE-2022-42731 was published on 2022-10-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:django-mfa2_project:django-mfa2:*:*:*:*:*:*:*:*

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