CVE-2026-75331 File upload in n/a
Attackers can upload malicious HTML or JavaScript files to the server via unrestricted file upload endpoints, leading to stored XSS and potential code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-75331?
CVE-2026-75331 is a medium-severity vulnerability in n/a, published on 26 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
tamguo 1.5.3 is vulnerable to Unrestricted File Upload Leading to Stored XSS. The /uploadFile and /imgUpload endpoints in FileUploadController.java and UEditorController.java have no file type validation. Attackers can upload arbitrary HTML/JavaScript files to the server.
Weakness: CWE-434
Which versions are affected by CVE-2026-75331?
How do I fix CVE-2026-75331?
No fix has been published for CVE-2026-75331 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-75331 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-75331 exists.
Sources
Also known as GHSA-g8c8-m4x5-p2mp.