UpHeron
All vulnerabilities

Servers and applications

CVE-2026-26265

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, an IDOR vulnerability in the directory items endpoint allows any user, including anonymous users, to retrieve private user field values for all users in the directory. The `user_field_ids` parameter in `DirectoryItemsController#index` accepts arbitrary user field IDs without authorization…

Severity
High 7.5
Published
26 Feb 2026
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
2025.12.0, 2026.1.1
Sources
NVD

Affected software

SoftwareAffected versions
DiscourseServers and applications · cpe:a:discourse:discourse
  • Every version before 2025.12.0
  • From 2026.1.0 before 2026.1.1
  • Version 2026.2.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-26265
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-26265