MCP Atlassian: Unauthenticated arbitrary local file read via upload_attachment file_path, chained with missing auth on streamable-http transport
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| sooperset | mcp-atlassian | affected |
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| Sooperset | Mcp-atlassian |
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| Source | ID | Title |
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Github GHSA |
GHSA-cc5h-2pwp-pvcc | MCP Atlassian: Unauthenticated arbitrary local file read via upload_attachment file_path, chained with missing auth on streamable-http transport |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.475% probability within 30 days)
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| Metrics |
ssvc
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| First Time appeared |
Mcp-atlassian
Mcp-atlassian mcp Atlassian |
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| CPEs | cpe:2.3:a:mcp-atlassian:mcp_atlassian:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Mcp-atlassian
Mcp-atlassian mcp Atlassian |
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| First Time appeared |
Sooperset
Sooperset mcp-atlassian |
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| Vendors & Products |
Sooperset
Sooperset mcp-atlassian |
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| Description | MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, the streamable HTTP transport accepts requests without a user identity and falls back to operator credentials, while upload_attachment accepts an unrestricted file_path. An unauthenticated network caller can read files available to the MCP process, upload them to an attacker-selected Jira issue or Confluence page, and retrieve the contents. The advisory traces the vulnerable input and processing flow through streamable-http, UserTokenMiddleware, upload_attachment, file_path, and _get_fetcher, which identify the affected entry points, controls, and code paths. This issue is fixed in version 0.22.0. | |
| Title | MCP Atlassian: Unauthenticated arbitrary local file read via upload_attachment file_path, chained with missing auth on streamable-http transport | |
| Weaknesses | CWE-22 CWE-306 |
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| References |
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| Metrics |
cvssV3_1
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