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CVE-2021-41163

10.0 · CRITICAL

Discourse is an open source platform for community discussion.

Published Oct 20, 2021CWE-74EPSS 19.81%

Overview

CVE-2021-41163 is a critical-severity vulnerability. It was published on October 20, 2021 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Discourse is an open source platform for community discussion. In affected versions maliciously crafted requests could lead to remote code execution. This resulted from a lack of validation in subscribe_url values. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. To workaround the issue without updating, requests with a path starting /webhooks/aws path could be blocked at an upstream proxy.

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/fa3c46cf079d28b086fe1025349bb00223a5d5e9GitHubgithub.com/discourse/discourse/security/advisories/GHSA-jcjx-pvpc-qgwqGitHubgithub.com/discourse/discourse/commit/fa3c46cf079d28b086fe1025349bb00223a5d5e9GitHubgithub.com/discourse/discourse/security/advisories/GHSA-jcjx-pvpc-qgwq

How CyberStrike helps

Frequently asked questions

What is CVE-2021-41163?

CVE-2021-41163 is a critical-severity vulnerability. It was published on October 20, 2021 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2021-41163?

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-41163?

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-2021-41163?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-41163 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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