CVE-2020-21316 Cross-site scripting in n/a

Medium 6.1 Published 15 Jun 2021 Updated 4 Aug 2024

Remote attackers can inject scripts via the nickname parameter to steal administrator cookies and access the admin panel.

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-2020-21316?

CVE-2020-21316 is a medium-severity cross-site scripting vulnerability in n/a, published on 15 Jun 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

A Cross-site scripting (XSS) vulnerability exists in the comment section in ZrLog 2.1.3, which allows remote attackers to inject arbitrary web script and stolen administrator cookies via the nickname parameter and gain access to the admin panel.

Weakness: CWE-79

Which versions are affected by CVE-2020-21316?

It affects 1 product.

Products include Zrlog Zrlog.

How do I fix CVE-2020-21316?

No fix has been published for CVE-2020-21316 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-2020-21316 being exploited?

There is no known exploitation of CVE-2020-21316 in the wild and no public exploit code.

Sources

Also known as GHSA-mwq9-wcfh-9w35.