UpHeron
All vulnerabilities

Servers and applications

CVE-2026-27153

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, moderators could export user Chat DMs via the CSV export endpoint by exploiting an overly permissive allowlist in `can_export_entity?`. The method allowed moderators to export any entity not explicitly blocked instead of restricting to an explicit allowlist. Versions 2025.12.2, 2026.1.1, and…

Severity
Low 1.3
Published
26 Feb 2026
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
2025.12.2, 2026.1.1
Sources
NVD

Affected software

SoftwareAffected versions
DiscourseServers and applications · cpe:a:discourse:discourse
  • Every version before 2025.12.2
  • From 2026.1.0 before 2026.1.1
  • Version 2026.2.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-27153
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-27153