CVEvulnerability

CVE-2026-47264

5.3 MEDIUM Published 2026-06-12 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-06-12
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weaknesses
CWE-200

Description

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.

Affected configurations

• discourse discourse (< 2026.1.0) • discourse discourse (>= 2026.1.0 < 2026.1.4) • discourse discourse (>= 2026.3.0 < 2026.3.1) • discourse discourse (>= 2026.4.0 < 2026.4.1) • discourse discourse 2026.5.0

Related

Weakness · CWE (1)

  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor weakness

References