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CVE-2026-92919— admin3 through 3.0.0 Arbitrary File Write via Path Traversal in Storage Upload Filename

Quick assessment

Affected
cjbi admin3
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.

admin3 至 3.0.0 版本在上传处理程序中对客户端提供的文件名缺乏有效过滤，使得已认证用户能够在 Windows 部署环境中将文件写入存储根目录之外。攻击者可以利用文件名中的“点-点”（dot-dot，即 ）路径片段，从而跳出配置的存储目录，覆盖服务器进程可访问的任意文件。

CVSS 8.1 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-92919

Vulnerability Information
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Vulnerability Title
admin3 through 3.0.0 Arbitrary File Write via Path Traversal in Storage Upload Filename
Source: CVE Program / CVE List V5
Vulnerability Description
admin3 through 3.0.0 fails to sanitize client-supplied filenames in the upload handler, allowing authenticated users to write files outside the storage root on Windows deployments. Attackers can use dot-dot path segments in filenames to escape the configured storage directory and overwrite arbitrary files accessible to the server process.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
cjbi admin3 0 ~ 3.0.0 -

II. Public POCs for CVE-2026-92919

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-92919

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Vendor Advisories for CVE-2026-92919 (1)

Proof of Concept for CVE-2026-92919 (1)

Vendor Pages for CVE-2026-92919 (1)

Other References for CVE-2026-92919 (2)

Same Patch Batch · cjbi · 2026-09-17 · 4 CVEs total

CVE-2026-92918 8.8 HIGH admin3 through 3.0.0 Session Token Disclosure via Audit Log
CVE-2026-92920 5.4 MEDIUM admin3 through 3.0.0 Session Not Invalidated When a User Account Is Disabled
CVE-2026-92921 4.9 MEDIUM admin3 through 3.0.0 Weak Password Hashing via Single-Round MD5

IV. Related Vulnerabilities

Same product: admin3
Same vendor: cjbi
Same weakness: CWE-22

V. Comments for CVE-2026-92919

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