Is CVE-2022-42731 in the CISA KEV catalog?

No. CVE-2022-42731 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-42731?

CVE-2022-42731 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2022-42731?

CVE-2022-42731 has an EPSS score of 1.00% (59th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-42731?

Upgrade django-mfa2 to 2.6.1 or later.

CVE & CISA-KEV Catalog

CVE-2022-42731

HIGH

7.5

CVSS v3

NVD

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.

CWE-294

How to fix

Remediation Available

django-mfa2NVD

Affected:>= 2.6.0, < 2.6.1Fixed in:2.6.1CVE-2022-42731derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

1.00%probability of exploitation in 30 days

59thpercentile

Moderate risk: more likely to be exploited than 59% of all known CVEs.

References

Exploit1

github.com

Third-Party Advisory2

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Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-05-20.