CVE-2026-84423
Description
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
Propose a mitigation on Community Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
References
- https://github.com/casdoor/casdoor/
- https://github.com/casdoor/casdoor/issues/5617
- https://github.com/geo-chen/oss/blob/main/casdoor.md#finding-1-unauthenticated-arbitrary-file-upload-via-apiupload-resource
- https://vuldb.com/cve/CVE-2026-84423
- https://vuldb.com/submit/883037
- https://vuldb.com/vuln/397791
- https://vuldb.com/vuln/397791/cti
CWEs
CWE-287 CWE-306
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.