CVE-2026-88419 File upload in n/a
Authenticated low-privileged users can upload malicious PHP files to execute arbitrary code on the server due to missing extension validation in WuzhiCMS.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-88419?
CVE-2026-88419 is a high-severity vulnerability in n/a, published on 22 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-434
Which versions are affected by CVE-2026-88419?
How do I fix CVE-2026-88419?
No fix has been published for CVE-2026-88419 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-88419 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-88419 exists.
Sources
Also known as GHSA-r6cc-qh78-7796.