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CVE-2022-21684

4.3 · MEDIUM

Discourse is an open source discussion platform.

Published Jan 13, 2022CWE-287EPSS 0.83%

Overview

CVE-2022-21684 is a medium-severity vulnerability. It was published on January 13, 2022 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Discourse is an open source discussion platform. Versions prior to 2.7.13 in `stable`, 2.8.0.beta11 in `beta`, and 2.8.0.beta11 in `tests-passed` allow some users to log in to a community before they should be able to do so. A user invited via email to a forum with `must_approve_users` enabled is going to be automatically logged in, bypassing the check that does not allow unapproved users to sign in. They will be able to do everything an approved user can do. If they logout, they cannot log back in. This issue is patched in the `stable` version 2.7.13, `beta` version 2.8.0.beta11, and `tests-passed` version 2.8.0.beta11. One may disable invites as a workaround. Administrators can increase `min_trust_level_to_allow_invite` to reduce the attack surface to more trusted users.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/discourse/discourse/commit/584c6a2e8bc705072b09a9c4b55126d6f8ed4ad2GitHubgithub.com/discourse/discourse/security/advisories/GHSA-p63q-jp48-h8xhRefmeta.discourse.org/t/invite-redemption-allowed-user-to-access-forum-before-approval/214328GitHubgithub.com/discourse/discourse/commit/584c6a2e8bc705072b09a9c4b55126d6f8ed4ad2GitHubgithub.com/discourse/discourse/security/advisories/GHSA-p63q-jp48-h8xhRefmeta.discourse.org/t/invite-redemption-allowed-user-to-access-forum-before-approval/214328

How CyberStrike helps

Frequently asked questions

What is CVE-2022-21684?

CVE-2022-21684 is a medium-severity vulnerability. It was published on January 13, 2022 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2022-21684?

This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-21684?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-21684?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-21684 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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