What’s Vulnerable › Vulnerabilities

CVE-2022-39355: Discourse Patreon vulnerable to improper validation of email during Patreon authentication

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-10-26 · updated 2026-06-17
• Weakness: CWE-287

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.

Affected products

• discourse-patreon: before 2022-10-26 — fixed in 2022-10-26

How to fix

Upgrade to a fixed version: discourse-patreon 2022-10-26. Check the vendor advisory for mitigations.

References

• https://github.com/discourse/discourse-patreon/commit/846d012151514b35ce42a1636c7d70f6dcee879e
• https://github.com/discourse/discourse-patreon/security/advisories/GHSA-fvj9-f67v-qpr4
• https://github.com/discourse/discourse-patreon/commit/846d012151514b35ce42a1636c7d70f6dcee879e
• https://github.com/discourse/discourse-patreon/security/advisories/GHSA-fvj9-f67v-qpr4

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