CVE-2020-22421 Cross-site scripting in n/a

Medium 6.1 Published 8 Dec 2021 Updated 4 Aug 2024

An attacker can inject malicious scripts into the help list page of 74CMS, potentially stealing user data or executing code in victim browsers.

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-2020-22421?

CVE-2020-22421 is a medium-severity cross-site scripting vulnerability in n/a, published on 8 Dec 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

74CMS v6.0.4 was discovered to contain a cross-site scripting (XSS) vulnerability via /index.php?m=&c=help&a=help_list&key.

Weakness: CWE-79

Which versions are affected by CVE-2020-22421?

It affects 1 product.

Products include 74cms 74cms.

How do I fix CVE-2020-22421?

No fix has been published for CVE-2020-22421 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-2020-22421 being exploited?

There is no known exploitation of CVE-2020-22421 in the wild and no public exploit code.

Sources

Also known as GHSA-w27q-xjw8-g94c.