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CVE-2026-47264

5.3 MEDIUM

Discourse is an open-source discussion platform

Published: 2026-06-12 · Last updated: 2026-06-12

Severity and scoring

CVSS
5.3 MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE
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.

Source: NVD

References

Related CVEs

Same CWE

  • CVE-2026-49397 — Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool (5.3 MEDIUM)
  • CVE-2026-47124 — Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool (6.5 MEDIUM)
  • CVE-2026-54396 — An information disclosure vulnerability exists in the MISP AuthKey edit functionality
  • CVE-2026-47263 — Discourse is an open-source discussion platform (4.3 MEDIUM)
  • CVE-2026-45085 — Discourse is an open-source discussion platform (5.3 MEDIUM)