CVE-2026-84423
Medium
Elevated severity or exploit probability.
CVSS base
7.3
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
EPSS — probability of exploitation (30 days)
0.7%
50.9th percentile
CISA KEV
Not listed
Weakness / dates
CWE-287
Published 2026-09-01 · modified 2026-09-03
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.
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