CVE-2020-19950 Cross-site scripting in n/a

Medium 4.8 Published 23 Sep 2021 Updated 4 Aug 2024

Attackers can execute arbitrary web scripts or HTML via the banner component in YzmCMS, potentially compromising user sessions.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2020-19950?

CVE-2020-19950 is a medium-severity cross-site scripting vulnerability in n/a, published on 23 Sep 2021. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

Official description

A cross-site scripting (XSS) vulnerability in the /banner/add.html component of YzmCMS v5.3 allows attackers to execute arbitrary web scripts or HTML.

Weakness: CWE-79

Which versions are affected by CVE-2020-19950?

It affects 1 product.

Products include Yzmcms Yzmcms.

How do I fix CVE-2020-19950?

No fix has been published for CVE-2020-19950 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-2020-19950 being exploited?

There is no known exploitation of CVE-2020-19950 in the wild and no public exploit code.

Sources

Also known as GHSA-8f3c-5w2m-gp7j.