CVE-2018-19202 Cross-site scripting in n/a

Medium 6.1 Published 11 Apr 2019 Updated 5 Aug 2024

Remote attackers can inject JavaScript via the upsetting[bburl] parameter in MyBB, potentially leading to session hijacking or malicious actions.

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-2018-19202?

CVE-2018-19202 is a medium-severity cross-site scripting vulnerability in Mybb Mybb, published on 11 Apr 2019. 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 reflected XSS vulnerability in index.php in MyBB 1.8.x through 1.8.19 allows remote attackers to inject JavaScript via the 'upsetting[bburl]' parameter.

Weakness: CWE-79

Which versions are affected by CVE-2018-19202?

It affects 1 product.

Products include Mybb Mybb.

How do I fix CVE-2018-19202?

No fix has been published for CVE-2018-19202 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-2018-19202 being exploited?

There is no known exploitation of CVE-2018-19202 in the wild and no public exploit code.

All Mybb Mybb vulnerabilities

Sources

Also known as GHSA-2g9j-9x3c-w748.