CVE-2026-9053 File upload in 9front
An attacker can exploit a malicious default file path in HTML upload forms to upload files to arbitrary locations on 9front systems.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-9053?
CVE-2026-9053 is a medium-severity vulnerability in 9front, published on 22 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Mothra would respect a default value given by a website for HTML file upload forms. An attacker could craft a website with a malicious default file path, and then conceal this form element.
Weakness: CWE-434
Which versions are affected by CVE-2026-9053?
How do I fix CVE-2026-9053?
No fix has been published for CVE-2026-9053 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-9053 being exploited?
There is no known exploitation of CVE-2026-9053 in the wild and no public exploit code.
Sources
Also known as GHSA-38r3-cgcv-g3qp.