CVE-2026-91849

Medium

Description

A security flaw has been discovered in WuzhiCMS up to 4.1.0. This affects the function member::setAvatar of the file /index.php?m=member&f=user&v=setAvatar of the component Avatar Upload. The manipulation of the argument File results in unrestricted upload. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.

SeverityMedium

CVSS6.3

Exploit probability—

ProductWuzhicms

PublishedSep 15, 2026

First seenSep 15, 2026

Weakness typeCWE-434Unrestricted upload of dangerous file type CWE-284Improper access control

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

Product	Affected versions	Fixed in
wuzhicms wuzhicms	4.0, 4.1.0	—

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