PT-2026-48988 · Discourse · Discourse
Published
2026-06-12
·
Updated
2026-06-12
·
CVE-2026-47264
CVSS v3.1
5.3
Medium
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.4, 2026.3.0-latest to before 2026.3.1, and 2026.4.0-latest to before 2026.4.1, DetailedTagSerializer#tag group names returned every tag group a tag belonged to without filtering against the requesting user's visibility. With SiteSetting.tags listed by group enabled, anonymous and unprivileged users hitting TagsController#info (which is exempt from requires login) could read the names of tag groups restricted to specific user groups or non-visible categories. This issue has been patched in versions 2026.1.4, 2026.3.1, 2026.4.1, and 2026.5.0-latest.1.
Fix
Information Disclosure
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Weakness Enumeration
Related Identifiers
Affected Products
Discourse