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CVE-2024-21686

Confluence Data Center and Server - Confluence Web Application

Atlassian CVSS 8.7 Updated April 6, 2026

Executive Risk Summary

"A high severity Stored XSS vulnerability in Confluence Data Center and Server versions 7.13 allows an authenticated attacker to execute arbitrary HTML or JavaScript code on a victim's browser, impacting confidentiality and integrity. Atlassian recommends upgrading to the latest version or a specified supported fixed version to mitigate this vulnerability."

Anticipated Attack Path

  1. 1. Exploitation of Stored XSS vulnerability
  2. 2. Execution of arbitrary HTML or JavaScript code
  3. 3. Potential data theft or modification

Am I Vulnerable?

  • Verify Confluence Data Center and Server version
  • Check for available upgrades or patches
  • Implement web application firewall rules to detect and prevent XSS attacks

Operational Audit Arsenal

Target Type Web Application
Target Asset confluence
Standard Path https://confluence.atlassian.com/

Manual Verification Required

This is a non-Windows asset (Atlassian). Use the target asset details and official path provided above to verify your current version against the official vendor advisories listed below.

Patch Impact Forecast

Reboot Required Likely

Potential downtime during upgrade

Internal Work Notes

High severity Stored XSS vulnerability in Confluence Data Center and Server, requiring immediate attention and upgrade to a fixed version.

Technical Intelligence & Operational Utilities • Delivered Weekly

Intelligence Sources

Related Atlassian Threats

Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.