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CVE-2026-84423— Casdoor upload-resource API resource.go missing authentication

Quick assessment

Affected
n/a Casdoor
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Casdoor是Casdoor组织开源的一个支持多种身份验证和授权协议的开源平台。 Casdoor 4.0.0及之前版本存在授权问题漏洞，该漏洞源于controllers/resource.go文件中upload-resource API组件缺少身份验证，可能导致远程攻击者利用该漏洞。

CVSS 7.3 · High EPSS 0.69% · P52

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
n/a Casdoor 4.0 affected
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I. Basic Information for CVE-2026-84423

Vulnerability Information
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Vulnerability Title
Casdoor upload-resource API resource.go missing authentication
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Casdoor 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Casdoor是Casdoor组织开源的一个支持多种身份验证和授权协议的开源平台。 Casdoor 4.0.0及之前版本存在授权问题漏洞，该漏洞源于controllers/resource.go文件中upload-resource API组件缺少身份验证，可能导致远程攻击者利用该漏洞。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
- Casdoor 4.0 cpe:2.3:a:casdoor:casdoor:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-84423

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III. Intelligence Information for CVE-2026-84423

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Proof of Concept for CVE-2026-84423 (1)

Mailing List Discussions for CVE-2026-84423 (1)

Security Blog Posts for CVE-2026-84423 (1)

Vendor Pages for CVE-2026-84423 (1)

Other References for CVE-2026-84423 (2)

Same Patch Batch · n/a · 2026-09-01 · 35 CVEs total

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Showing top 20 of 35 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Casdoor
Same vendor: n/a
Same weakness: CWE-306

V. Comments for CVE-2026-84423

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