CVE-2021-40191 Cross-site scripting in n/a

Medium 5.4 Published 11 Oct 2021 Updated 4 Aug 2024

Attackers can execute arbitrary scripts via unsanitized file uploads in Dzzoffice, potentially leading to session hijacking or malicious actions.

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-2021-40191?

CVE-2021-40191 is a medium-severity cross-site scripting vulnerability in n/a, published on 11 Oct 2021. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Dzzoffice Version 2.02.1 is affected by cross-site scripting (XSS) due to a lack of sanitization of input data at all upload functions in webroot/dzz/attach/Uploader.class.php and return a wrong response in content-type of output data in webroot/dzz/attach/controller.php.

Weakness: CWE-79

Which versions are affected by CVE-2021-40191?

It affects 1 product.

Products include Dzzoffice Dzzoffice.

How do I fix CVE-2021-40191?

No fix has been published for CVE-2021-40191 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-2021-40191 being exploited?

There is no known exploitation of CVE-2021-40191 in the wild and no public exploit code.

Sources

Also known as GHSA-2cwh-9m9v-957f.