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

Critical 9.1 Published Updated

Attackers can take over forum accounts via improper email validation during Patreon authentication on Discourse sites with this plugin enabled.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2022-39355?

CVE-2022-39355 is a critical authentication bypass vulnerability in discourse-patreon, published on 26 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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.

Weakness: CWE-287

Which versions are affected by CVE-2022-39355?

It affects 1 product.

Products include Discourse Patreon.

How do I fix CVE-2022-39355?

No fix has been published for CVE-2022-39355 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2022-39355 being exploited?

There is no known exploitation of CVE-2022-39355 in the wild and no public exploit code.

Sources

Also known as GHSA-fvj9-f67v-qpr4.

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