CVE-2026-84423Casdoor upload-resource API resource.go missing authentication
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.3 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
- Weakness (CWE)
- CWE-306, CWE-287
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- Sep 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
n/a Casdoor casdoor:casdoor | 4.0 | CNA record |
References
- https://vuldb.com/vuln/397791vdb-entry
- https://vuldb.com/vuln/397791/ctisignature, permissions-required
- https://vuldb.com/cve/CVE-2026-84423third-party-advisory
- https://vuldb.com/submit/883037third-party-advisory
- https://github.com/casdoor/casdoor/issues/5617issue-tracking
- https://github.com/geo-chen/oss/blob/main/casdoor.md#finding-1-unauthenticated-arbitrary-file-upload-via-apiupload-resourceexploit
- https://github.com/casdoor/casdoor/product
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.