CVE-2026-32243
Discourse: Stored XSS in discourse-ai shared conversations onebox
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
15th
Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, an attacker with the ability to create shared AI conversations could inject arbitrary HTML and JavaScript via crafted conversation titles. This payload would execute in the browser of any user viewing the onebox preview, potentially allowing session hijacking or unauthorized actions on behalf of the victim. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.
| CWE | CWE-79 |
| Vendor | discourse |
| Product | discourse |
| Published | Mar 31, 2026 |
| Last Updated | Apr 3, 2026 |
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Affected Versions
discourse / discourse
>= 2026.1.0-latest, < 2026.1.3 >= 2026.2.0-latest, < 2026.2.2 >= 2026.3.0-latest, < 2026.3.0