Atlassian Confluence Server and Data Center Path Traversal Vulnerability

Atlassian Confluence Server and Data Center contain a path traversal vulnerability in the downloadallattachments resource that may allow a privileged, remote attacker to write files. Exploitation can lead to remote code execution.

Published 2 Oct 2026Updated 2 Oct 2026317 sources
CVSS 9.0 ✓ VERIFIED REFERENCE△ CISA KEV

What happened

Atlassian Confluence Server and Data Center contain a path traversal vulnerability in the downloadallattachments resource that may allow a privileged, remote attacker to write files. Exploitation can lead to remote code execution.

Affected versions

Confluence Server and Data Center: See original advisory Fixed: See vendor advisory.

Why it matters

This source correlation may provide earlier visibility while structured CVE metadata is still being updated.

Detection & mitigation

  • Review the original advisory and validate affected versions.
  • Apply vendor-provided updates or mitigations when available.

Public PoC references