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CVE-2023-43659

8.0 · HIGH

Discourse is an open source platform for community discussion.

Published Oct 16, 2023CWE-79EPSS 0.48%

Overview

CVE-2023-43659 is a high-severity vulnerability. It was published on October 16, 2023 and has a CVSS 3.1 base score of 8.0 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Discourse is an open source platform for community discussion. Improper escaping of user input allowed for Cross-site Scripting attacks via the digest email preview UI. This issue only affects sites with CSP disabled. This issue has been patched in the 3.1.1 stable release as well as the 3.2.0.beta1 release. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum.

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

Refdeveloper.mozilla.org/en-US/docs/Web/HTTP/CSPGitHubgithub.com/discourse/discourse/security/advisories/GHSA-g4qg-5q2h-m8phRefdeveloper.mozilla.org/en-US/docs/Web/HTTP/CSPGitHubgithub.com/discourse/discourse/security/advisories/GHSA-g4qg-5q2h-m8ph

How CyberStrike helps

Frequently asked questions

What is CVE-2023-43659?

CVE-2023-43659 is a high-severity vulnerability. It was published on October 16, 2023 and has a CVSS 3.1 base score of 8.0 (HIGH).

How severe is CVE-2023-43659?

This vulnerability has a CVSS 3.1 base score of 8.0, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-43659?

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-2023-43659?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-43659 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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