CVE-2022-39355

Name: CVE-2022-39355
Creator: NVD / NIST
Published: 2022-10-26T20:15:10.66+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.77%

Last modified Jun 17, 2026

CVE-2022-39355 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Discourse Patreon enables syncronization between Discourse Groups and Patreon rewards. On sites with Patreon login enabled, an improper authentication vulnerability could be used to take control of a victim's forum account. EPSS estimates a 0.77% chance of exploitation in the next 30 days.

Description

Discourse Patreon enables syncronization between Discourse Groups and Patreon rewards. On sites with Patreon login enabled, an improper authentication vulnerability could be used to take control of a victim's forum account. This vulnerability is patched in commit number 846d012151514b35ce42a1636c7d70f6dcee879e of the discourse-patreon plugin. Out of an abundance of caution, any Discourse accounts which have logged in with an unverified-email Patreon account will be logged out and asked to verify their email address on their next login. As a workaround, disable the patreon integration and log out all users with associated Patreon accounts.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.77%

50.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Discourse	Patreon	< 2022-10-26

References

https://github.com/discourse/discourse-patreon/commit/846d012151514b35ce42a1636c7d70f6dcee879ePatch, Third Party Advisory
https://github.com/discourse/discourse-patreon/security/advisories/GHSA-fvj9-f67v-qpr4Third Party Advisory
https://github.com/discourse/discourse-patreon/commit/846d012151514b35ce42a1636c7d70f6dcee879ePatch, Third Party Advisory
https://github.com/discourse/discourse-patreon/security/advisories/GHSA-fvj9-f67v-qpr4Third Party Advisory

Timeline

Published: Oct 26, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-39355?

How severe is CVE-2022-39355?

CVE-2022-39355 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.77% probability of exploitation in the next 30 days.

How do I fix CVE-2022-39355?

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-2022-39355?

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

Scan your code now

Source: NVD / NIST