CVE-2018-13389 Cross-site scripting in Confluence

Medium 4.7 Published 10 Jul 2018 Updated 17 Sep 2024

Remote attackers can spoof web content in Firefox via malicious attachments, requiring an upgrade to Confluence.

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-2018-13389?

CVE-2018-13389 is a medium-severity cross-site scripting vulnerability in Atlassian Confluence, published on 10 Jul 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

The attachment resource in Atlassian Confluence before version 6.6.1 allows remote attackers to spoof web content in the Mozilla Firefox Browser through attachments that have a content-type of application/rdf+xml.

Weakness: CWE-20

Which versions are affected by CVE-2018-13389?

It affects 1 product.

Products include Atlassian Confluence.

How do I fix CVE-2018-13389?

No fix has been published for CVE-2018-13389 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-2018-13389 being exploited?

There is no known exploitation of CVE-2018-13389 in the wild and no public exploit code.

Sources

Also known as GHSA-frc2-fc33-2pfw.