CVE-2026-30578 Cross-site scripting in n/a

Medium 6.5 Published 20 Mar 2026 Updated 23 Mar 2026

A malicious user can execute arbitrary JavaScript via the dir parameter in File Thinghie, potentially compromising user sessions.

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-2026-30578?

CVE-2026-30578 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 Thinghie 2.5.7 is vulnerable to Cross Site Scripting (XSS). A malicious user can leverage the "dir" parameter of the GET request to invoke arbitrary javascript code.

Weakness: CWE-79

Which versions are affected by CVE-2026-30578?

It affects 1 product.

Products include Leefish File Thingie.

How do I fix CVE-2026-30578?

No fix has been published for CVE-2026-30578 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-2026-30578 being exploited?

There is no known exploitation of CVE-2026-30578 in the wild and no public exploit code.

Sources

Also known as GHSA-pqvq-hmh6-qwqj.