CVE-2026-88419

8.8 HIGHpublic exploit available

Published 2026-09-22 · Updated 2026-09-24

AI risk analysis

Summary: The flaw allows an authenticated low-privileged user to upload a .php file, leading to arbitrary code execution on the server due to lack of proper file extension validation and content checks.
Exploitability: Exploitation is relatively straightforward given the lack of validation, and requires an authenticated user with low privileges.
Blast radius: If exploited, the impact is high as it can lead to full server compromise and arbitrary code execution.
Detection: No reliable host or network indicator is derivable from the published description.
Prioritized remediation: Upgrade to WuzhiCMS 5.0.1 or later.

rceauth-bypassweb

Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.

NVD description

An unrestricted upload of files with a dangerous type in the thumbnail-upload endpoint (/index.php?m=member&f=article&v=thumbUpload) of WuzhiCMS 5.0.0 allows an authenticated low-privileged member to upload a crafted .php file and execute arbitrary PHP code on the server, because the stored file extension is taken verbatim from the client-supplied filename with no extension allowlist or content validation and the file is written to the web-accessible uploadfile/ directory, from which the web server executes PHP.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

CWE-434

Public exploit & PoC references

All references

Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.

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