CVE-2021-42946 Cross-site scripting in n/a

Medium 4.8 Published 31 Mar 2022 Updated 4 Aug 2024

An attacker can inject malicious scripts via the Copyright field in the admin configuration page, potentially compromising user sessions or executing code.

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-2021-42946?

CVE-2021-42946 is a medium-severity cross-site scripting vulnerability in n/a, published on 31 Mar 2022. 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 exists in htmly.2.8.1 via the Copyright field in the /admin/config page.

Weakness: CWE-79

Which versions are affected by CVE-2021-42946?

It affects 1 product.

Products include Htmly Htmly.

How do I fix CVE-2021-42946?

No fix has been published for CVE-2021-42946 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-2021-42946 being exploited?

There is no known exploitation of CVE-2021-42946 in the wild and no public exploit code.

Sources

Also known as GHSA-h3h5-5cp8-g973.