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CVE-2021-43792

4.3 · MEDIUM

Discourse is an open source discussion platform.

Published Dec 1, 2021CWE-200EPSS 0.86%

Overview

CVE-2021-43792 is a medium-severity vulnerability. It was published on December 1, 2021 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. In affected versions a vulnerability affects users of tag groups who use the "Tags are visible only to the following groups" feature. A tag group may only allow a certain group (e.g. staff) to view certain tags. Users who were tracking or watching the tags via /preferences/tags, then have their staff status revoked will still see notifications related to the tag, but will not see the tag on each topic. This issue has been patched in stable version 2.7.11. Users are advised to upgrade as soon as possible.

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/cdaf7f4bb3ec268238e4c29a14bb73fad56574b4GitHubgithub.com/discourse/discourse/security/advisories/GHSA-pq2x-vq37-8522Refmeta.discourse.org/t/non-forum-staff-getting-notifications-for-staff-only-tags/184895GitHubgithub.com/discourse/discourse/commit/cdaf7f4bb3ec268238e4c29a14bb73fad56574b4GitHubgithub.com/discourse/discourse/security/advisories/GHSA-pq2x-vq37-8522Refmeta.discourse.org/t/non-forum-staff-getting-notifications-for-staff-only-tags/184895

How CyberStrike helps

Frequently asked questions

What is CVE-2021-43792?

CVE-2021-43792 is a medium-severity vulnerability. It was published on December 1, 2021 and has a CVSS 3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2021-43792?

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-2021-43792?

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-2021-43792?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-43792 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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