All vulnerabilities

Servers and applications

CVE-2026-33185

Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, the group email settings test endpoint could be used to make the server initiate outbound connections to arbitrary hosts and ports. This could allow probing of internal network infrastructure. The endpoint was accessible to…

Severity
Medium 5.3
Published
31 Mar 2026
Last changed
24 Jul 2026
Added to UpHeron
21 Oct 2026
Fixed in
2026.1.3, 2026.2.2
Sources
NVD

Affected software

SoftwareAffected versions
DiscourseServers and applications · cpe:a:discourse:discourse
  • From 2026.1.0 before 2026.1.3
  • From 2026.2.0 before 2026.2.2
  • Version 2026.3.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2026-33185
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-33185