CVE-2020-18084 Cross-site scripting in n/a

Medium 6.1 Published 30 Apr 2021 Updated 4 Aug 2024

Remote attackers can execute arbitrary code via XSS in the login referer field of yzmCMS.

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

What is CVE-2020-18084?

CVE-2020-18084 is a medium-severity cross-site scripting vulnerability in n/a, published on 30 Apr 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Cross Site Scripting (XSS) in yzmCMS v5.2 allows remote attackers to execute arbitrary code by injecting commands into the "referer" field of a POST request to the component "/member/index/login.html" when logging in.

Weakness: CWE-79

Which versions are affected by CVE-2020-18084?

It affects 1 product.

Products include Yzmcms Yzmcms.

How do I fix CVE-2020-18084?

No fix has been published for CVE-2020-18084 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-2020-18084 being exploited?

There is no known exploitation of CVE-2020-18084 in the wild and no public exploit code.

Sources

Also known as GHSA-8jm8-5rhf-cx7x.