CVE-2022-31263

Name: CVE-2022-31263
Creator: NVD / NIST
Published: 2022-05-24T04:15:08.367+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.81%

Last modified Jun 17, 2026

CVE-2022-31263 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. app/models/user.rb in Mastodon before 3.5.0 allows a bypass of e-mail restrictions.. EPSS estimates a 0.81% chance of exploitation in the next 30 days.

Description

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

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.81%

52.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Joinmastodon	Mastodon	< 3.5.0

References

https://github.com/mastodon/mastodon/pull/17909Patch, Third Party Advisory
https://github.com/mastodon/mastodon/releases/tag/v3.5.0Release Notes, Third Party Advisory
https://github.com/mastodon/mastodon/pull/17909Patch, Third Party Advisory
https://github.com/mastodon/mastodon/releases/tag/v3.5.0Release Notes, Third Party Advisory

Timeline

Published: May 24, 2022
Last Modified: Jun 17, 2026
Status: Modified

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 score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.81% probability of exploitation in the next 30 days.

How do I fix CVE-2022-31263?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-31263?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST