CVE-2026-47264

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, DetailedTagSerializertaggroupnames returned every tag group a tag belonged to without filtering against the requesting...

CVE-2026-47264

CVE-2026-47264 affects Discourse releases 2026.1.0–2026.1.3, 2026.3.0–2026.3.0x (up to 2026.3.0-latest until 2026.3.1), and 2026.4.0–2026.4.0x (up to 2026.4.0-latest until 2026.4.1). The root cause is that DetailedTagSerializer#tag_group_names returned every tag group a tag belonged to without fi...

PT-2026-48988

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, DetailedTagSerializertag group names returned every tag group a tag belonged to without filtering against the requesting...