Security Advisory

CVE-2026-27154

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-02-26 21:20:25

Last updated 2026-03-02 20:57:00

Assigner GitHub_M

State PUBLISHED

Description

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, a user full name can be evaluated as raw HTML when the following settings are set: `display_name_on_posts` => true; and `prioritize_username_in_ux` => false. Editing a post of a malicious user would trigger an XSS. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

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