CVE-2023-40984 Cross-site scripting in n/a

Medium 5.4 Published 15 Sep 2023 Updated 9 Jul 2026

Attackers can execute malicious scripts in Webmin's File Manager via reflected XSS, potentially compromising user sessions and data.

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-2023-40984?

CVE-2023-40984 is a medium-severity cross-site scripting vulnerability in Webmin Webmin, published on 15 Sep 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A reflected cross-site scripting (XSS) vulnerability in the File Manager function of Webmin v2.100 allows attackers to execute malicious scripts via injecting a crafted payload into the Replace in Results file.

Weakness: CWE-79

Which versions are affected by CVE-2023-40984?

It affects 1 product.

Products include Webmin Webmin.

How do I fix CVE-2023-40984?

No fix has been published for CVE-2023-40984 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-2023-40984 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-40984 exists.

All Webmin Webmin vulnerabilities

Sources

Also known as GHSA-pg5c-r35w-x68r.