CVE-2026-88419 WuzhiCMS - Remote Code Execution

WuzhiCMS 5.0.0 contains an unrestricted file upload vulnerability caused by lack of extension allowlist and content validation in the thumbnail-upload endpoint, letting authenticated low-privileged members execute arbitrary PHP code on the server.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.48% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
22 September 2026
Updated
15 October 2026
Weakness
CWE-434

Vendor fix

Update to the latest version with proper file validation and extension allowlist.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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