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CVE-2026-82906— sdcb chats Signed File Download Endpoint FileController.cs DownloadPublic missing authentication

Quick assessment

Affected
sdcb chats
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.

ZHOU Jie Sdcb Chats是ZHOU Jie个人开发者开源的一个强大且灵活的大语言模型前端，支持 22+ 主流 AI 模型服务商。 ZHOU Jie Sdcb Chats 1.12.0及之前版本存在授权问题漏洞，该漏洞源于对文件src/BE/web/Controllers/Chats/Files/FileController.cs中DownloadPublic函数的操作导致身份验证缺失，可能允许远程攻击者利用该漏洞。

CVSS 3.7 · Low EPSS 0.57% · P47

Affected Version Matrix 13

VendorProduct Version RangeStatus
sdcb chats 1.0 affected
1.1 affected
1.2 affected
1.3 affected
1.4 affected
1.5 affected
1.6 affected
1.7 affected
… +5 more rows
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I. Basic Information for CVE-2026-82906

Vulnerability Information
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Vulnerability Title
sdcb chats Signed File Download Endpoint FileController.cs DownloadPublic missing authentication
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw has been found in sdcb chats up to 1.12.0. This impacts the function DownloadPublic of the file src/BE/web/Controllers/Chats/Files/FileController.cs of the component Signed File Download Endpoint. This manipulation causes missing authentication. Remote exploitation of the attack is possible. The attack's complexity is rated as high. The exploitability is said to be difficult. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
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
ZHOU Jie Sdcb Chats 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZHOU Jie Sdcb Chats是ZHOU Jie个人开发者开源的一个强大且灵活的大语言模型前端，支持 22+ 主流 AI 模型服务商。 ZHOU Jie Sdcb Chats 1.12.0及之前版本存在授权问题漏洞，该漏洞源于对文件src/BE/web/Controllers/Chats/Files/FileController.cs中DownloadPublic函数的操作导致身份验证缺失，可能允许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
sdcb chats 1.0 cpe:2.3:a:sdcb:chats:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-82906

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III. Intelligence Information for CVE-2026-82906

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Vendor Advisories for CVE-2026-82906 (1)

Proof of Concept for CVE-2026-82906 (1)

Other References for CVE-2026-82906 (2)

IV. Related Vulnerabilities

Same product: chats
Same vendor: sdcb
Same weakness: CWE-306

V. Comments for CVE-2026-82906

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