CVE-2018-5776 Cross-site scripting in n/a

Medium 6.1 Published 18 Jan 2018 Updated 5 Aug 2024

Cross-site scripting vulnerability in WordPress MediaElement Flash fallback files allows attackers to inject malicious scripts.

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: Available

What is CVE-2018-5776?

CVE-2018-5776 is a medium-severity cross-site scripting vulnerability in Wordpress Wordpress, published on 18 Jan 2018. 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

WordPress before 4.9.2 has XSS in the Flash fallback files in MediaElement (under wp-includes/js/mediaelement).

Weakness: CWE-79

Which versions are affected by CVE-2018-5776?

It affects 1 product.

Products include Wordpress Wordpress.

How do I fix CVE-2018-5776?

Upgrade to a fixed version.

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-2018-5776 being exploited?

There is no known exploitation of CVE-2018-5776 in the wild and no public exploit code.

All Wordpress Wordpress vulnerabilities

Sources

Also known as DEBIAN-CVE-2018-5776, GHSA-gmjx-3rgm-r63g, UBUNTU-CVE-2018-5776.