CVSS 3.1 Score 5.4 of 10 (medium)


Published Oct 16, 2023
Updated: Oct 19, 2023


CVE-2023-43659 is a vulnerability that affects the open-source platform Discourse, specifically on sites with Content Security Policy (CSP) disabled. It allows for Cross-site Scripting (XSS) attacks via the digest email preview UI. The issue has been patched in the 3.1.1 stable release and the 3.2.0.beta1 release of Discourse, and users are advised to upgrade. For those unable to upgrade, enabling CSP on the forum is recommended. This vulnerability poses a medium risk with a base severity of 5.4, as it requires low privileges and user interaction, but has a low impact on integrity and confidentiality and no impact on availability.

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