CVE-2018-13389
CWE-20Published: July 10, 2018· Updated: Jun 17, 2026
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.
Technical Analysis
CVE-2018-13389 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.
The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (4)
Quick Facts
Related CVEs (CWE-20)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2018-13389 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts