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OpenAdvisories
Medium · 5.3 CVE-2026-30889 EUVD-2026-13490

Discourse has Unauthorized Post Data Exposure in discourse-user-notes

Published Mar 20, 2026 · Updated Mar 20, 2026 · Assigned by GitHub_M

Description

Discourse is an open-source discussion platform. Prior to versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2, a moderator could exploit insufficient authorization checks to access metadata of posts they should not have permission to view. Versions 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 contain a patch.

Affected products

VendorProductAffectedFixed
discourse discourse >= 2026.1.0-latest, < 2026.1.2, >= 2026.2.0-latest, < 2026.2.1, = 2026.3.0-latest.1 —

References