Discourse is an open-source discussion platform. From versions 2026.1.0 to before 2026.1.3, and 2026.2.0 to before 2026.2.2, updating a category description via API is not sanitizing the description string, which can lead to XSS attacks. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.
{
"severity": "Medium",
"cpes": [
"cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:*"
]
}