Unrated severityNVD Advisory· Published Feb 26, 2026· Updated Mar 2, 2026
Discourse has XSS when editing a malicious post
CVE-2026-27154
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.
Affected products
1- Range: < 2025.12.2
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1- github.com/discourse/discourse/security/advisories/GHSA-xv43-5gcp-wgw8mitrex_refsource_CONFIRM
News mentions
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