CVE-2020-5620 Cross-site scripting in Exment

Medium 5.4 Published 25 Aug 2020 Updated 4 Aug 2024

Remote authenticated attackers can inject arbitrary scripts via crafted files in Exment, potentially leading to code execution or account takeover.

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-2020-5620?

CVE-2020-5620 is a medium-severity cross-site scripting vulnerability in Kajitori Co.,Ltd Exment, published on 25 Aug 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

Cross-site scripting vulnerability in Exment prior to v3.6.0 allows remote authenticated attackers to inject arbitrary script or HTML via a specially crafted file.

Weakness: CWE-79

Which versions are affected by CVE-2020-5620?

It affects 1 product.

Products include Exceedone Exment.

How do I fix CVE-2020-5620?

No fix has been published for CVE-2020-5620 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-2020-5620 being exploited?

There is no known exploitation of CVE-2020-5620 in the wild and no public exploit code.

Sources

Also known as GHSA-39mv-h3p5-v5ch.