CVE-2020-21987 Cross-site scripting in n/a

Medium 6.1 Published 27 Apr 2021 Updated 4 Aug 2024

Persistent XSS in HomeAutomation allows attackers to execute arbitrary scripts in user browsers via unsanitized input parameters.

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-2020-21987?

CVE-2020-21987 is a medium-severity cross-site scripting vulnerability in n/a, published on 27 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

HomeAutomation 3.3.2 is affected by persistent Cross Site Scripting (XSS). XSS vulnerabilities occur when input passed via several parameters to several scripts is not properly sanitized before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session.

Weakness: CWE-79

Which versions are affected by CVE-2020-21987?

It affects 1 product.

Products include Homeautomation Project Homeautomation.

How do I fix CVE-2020-21987?

No fix has been published for CVE-2020-21987 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-2020-21987 being exploited?

There is no known exploitation of CVE-2020-21987 in the wild and no public exploit code.

Sources

Also known as GHSA-pg48-qhxg-gf7r.