UpHeron
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Servers and applications

CVE-2023-49805

Missing Origin Validation in WebSockets

Severity
High 8.8
Published
10 Dec 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
1.3.3, 1.23.9
Also known as
GHSA-mj22-23ff-2hrr
Sources
NVD, Project advisories (GitHub)

Description

Uptime Kuma is an easy-to-use self-hosted monitoring tool. Prior to version 1.23.9, the application uses WebSocket (with Socket.io), but it does not verify that the source of communication is valid. This allows third-party website to access the application on behalf of their client. When connecting to the server using Socket.IO, the server does not validate the `Origin` header leading to other…

Affected software

SoftwareAffected versions
Uptime KumaServers and applications · cpe:a:uptime.kuma:uptime_kuma
  • Every version before 1.23.9
Uptime KumaServers and applications · github:louislam/uptime-kuma
  • Every version before 1.3.3
  • Every version before 1.23.9

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-49805
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-49805
  • GitHub Advisory Database https://github.com/advisories/GHSA-mj22-23ff-2hrr
  • github.com https://github.com/louislam/uptime-kuma/security/advisories/GHSA-mj22-23ff-2hrr