How severe is CVE-2022-31263?

CVE-2022-31263 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2022-31263 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-31263?

CVE-2022-31263 affects Joinmastodon Mastodon. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-31263?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-31263 published?

CVE-2022-31263 was published on 2022-05-24 and last updated on 2026-06-17.

CVE-2022-31263

CVE-2022-31263 is a medium-severity vulnerability in Joinmastodon Mastodon with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Joinmastodon Mastodon
Published: 2022-05-24
Last modified: 2026-06-17

Description

app/models/user.rb in Mastodon before 3.5.0 allows a bypass of e-mail restrictions.

Frequently asked questions

What is CVE-2022-31263?: app/models/user.rb in Mastodon before 3.5.0 allows a bypass of e-mail restrictions.
How severe is CVE-2022-31263?: CVE-2022-31263 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability none.
Is CVE-2022-31263 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-31263?: CVE-2022-31263 affects Joinmastodon Mastodon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-31263?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-31263 published?: CVE-2022-31263 was published on 2022-05-24 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:joinmastodon:mastodon:*:*:*:*:*:*:*:*

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