UpHeron
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Servers and applications

CVE-2025-48053

Discourse is an open-source discussion platform. Prior to version 3.4.4 of the `stable` branch, version 3.5.0.beta5 of the `beta` branch, and version 3.5.0.beta6-dev of the `tests-passed` branch, sending a malicious URL in a PM to a bot user can cause a reduced the availability of a Discourse instance. This issue is patched in version 3.4.4 of the `stable` branch, version 3.5.0.beta5 of the…

Severity
High 8.7
Published
9 Jun 2025
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
3.4.4, 3.5.0
Sources
NVD

Affected software

SoftwareAffected versions
DiscourseServers and applications · cpe:a:discourse:discourse
  • Every version before 3.4.4
  • Every version before 3.5.0
  • Version 3.5.0-beta1
  • Version 3.5.0-beta2
  • Version 3.5.0-beta3
  • Version 3.5.0-beta4

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2025-48053
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2025-48053