CVE-2026-84423: Casdoor upload-resource API resource.go missing authentication
A vulnerability has been found in Casdoor up to 4.0.0. This affects an unknown function of the file controllers/resource.go of the component upload-resource API. Such manipulation leads to missing authentication. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor deleted the GitHub issue for this vulnerability without any explanation. Afterwards the vendor was contacted early about this disclosure via email but did not respond in any way.
Affected Software
Event History
Frequently Asked Questions
Who can exploit this issue?
The supplied vector indicates that exploitation can be performed remotely, requires no privileges, and does not require user interaction.
Which deployments should be prioritized for triage?
Casdoor versions up to 4.0.0 are identified as affected. The provided information does not name a fixed version.
What is the expected impact if exploitation succeeds?
The severity vector rates confidentiality, integrity, and availability impact as low, with no scope change. The overall severity is high at 7.3.
Is exploit code or public exploitation information available?
Yes. The disclosure states that an exploit has been publicly disclosed and may be used.