7.3highHigh
CVE-2026-84423
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.
What the metrics mean
- It is reachable over a network, without needing local access.
- For an attacker who can reach it, no special conditions are needed to exploit it.
- To exploit it, no account is needed.
- Beyond that, no action by a user is required.
Scoring
- CVSS
- 7.3 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L- CVSS v4
- 5.5
- Weakness
- CWE-287
- Assigned by
- cna@vuldb.com
Dates
- Published
- 2026-09-01
- Last modified
- 2026-09-03
- Sources
- NVD
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