CVE-2026-30579 Cross-site scripting in n/a
A malicious user can execute arbitrary JavaScript via a crafted file name in the upload functionality of File Thingie.
- 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-2026-30579?
CVE-2026-30579 is a medium-severity cross-site scripting vulnerability in n/a, published on 20 Mar 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
File Thingie 2.5.7 is vulnerable to Cross Site Scripting (XSS). A malicious user can leverage the "upload file" functionality to upload a file with a crafted file name used to trigger a Javascript payload.
Weakness: CWE-79
Which versions are affected by CVE-2026-30579?
It affects 1 product.
Products include Leefish File Thingie.
How do I fix CVE-2026-30579?
No fix has been published for CVE-2026-30579 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-30579 being exploited?
There is no known exploitation of CVE-2026-30579 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-gf2m-fvrm-3jx4.