File Path Exposure Vulnerability in Confluence and Jira by Atlassian
CVE-2026-73498

7.7HIGH

Key Information:

Vendor

Sooperset

Status
Mcp-atlassian
Vendor
CVE Published:
12 August 2026

What is CVE-2026-73498?

The MCP Atlassian server for Confluence and Jira has a vulnerability in the confluence_upload_attachment function, which allows an authenticated client to exploit the file_path parameter. This oversight permits the reading of any file accessible to the server process. Consequently, an attacker could exfiltrate sensitive information, including environment variables like CONFLUENCE_API_TOKEN, by integrating untrusted content that triggers the tool. The issue has been rectified in version 0.22.0.

Affected Version(s)

mcp-atlassian < 0.22.0

References

https://github.com/sooperset/mcp-atlassian/security/advis...
x_refsource_CONFIRM
https://github.com/sooperset/mcp-atlassian/pull/1448
x_refsource_MISC
https://github.com/sooperset/mcp-atlassian/commit/b041733...
x_refsource_MISC

CVSS V3.1

Score:
7.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.