UpHeron
All vulnerabilities

Servers and applications

CVE-2026-32243

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, an attacker with the ability to create shared AI conversations could inject arbitrary HTML and JavaScript via crafted conversation titles. This payload would execute in the browser of any user viewing the onebox preview,…

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-2026-32243
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-32243