CVE-2018-10101 Server-side request forgery in n/a

Medium 6.1 Published 14 Apr 2018 Updated 5 Aug 2024

WordPress URL validator flaw allows attackers to bypass SSRF protections by using localhost hostnames, potentially accessing internal resources.

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-2018-10101?

CVE-2018-10101 is a medium-severity server-side request forgery vulnerability in Debian Debian Linux, published on 14 Apr 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

Before WordPress 4.9.5, the URL validator assumed URLs with the hostname localhost were on the same host as the WordPress server.

Weakness: CWE-601

Which versions are affected by CVE-2018-10101?

It affects 2 products.

Products include Debian Debian Linux, Wordpress Wordpress.

How do I fix CVE-2018-10101?

Upgrade to a fixed version.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2018-10101 being exploited?

There is no known exploitation of CVE-2018-10101 in the wild and no public exploit code.

All Debian Debian Linux vulnerabilities

Sources

Also known as DEBIAN-CVE-2018-10101, GHSA-ccmp-622j-3xf7.