UpHeron
All vulnerabilities

Servers and applications

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, 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…

Severity
Medium 5.3
Published
12 Jun 2026
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
2026.1.0, 2026.1.4, 2026.3.1, 2026.4.1
Sources
NVD

Affected software

SoftwareAffected versions
DiscourseServers and applications · cpe:a:discourse:discourse
  • Every version before 2026.1.0
  • From 2026.1.0 before 2026.1.4
  • From 2026.3.0 before 2026.3.1
  • From 2026.4.0 before 2026.4.1
  • Version 2026.5.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-47264
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-47264