MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, ENABLED_TOOLS and TOOLSETS are applied when tools are listed but are not rechecked when a tools/call request is dispatched. A client that knows a hidden tool name can directly invoke excluded read, write, or delete tools despite the operator's configured least-privilege restrictions. The advisory traces the vulnerable input and processing flow through ENABLED_TOOLS, TOOLSETS, tools/list, tools/call, and _call_tool_mcp, which identify the affected entry points, controls, and code paths. This issue is fixed in version 0.22.0.
Metrics
Affected Vendors & Products
References
History
Tue, 29 Sep 2026 15:45:00 +0000
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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 |
Tue, 22 Sep 2026 20:30:00 +0000
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| Metrics |
ssvc
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Tue, 22 Sep 2026 20:15:00 +0000
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Sooperset
Sooperset mcp-atlassian |
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| Vendors & Products |
Sooperset
Sooperset mcp-atlassian |
Tue, 22 Sep 2026 18:15:00 +0000
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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, ENABLED_TOOLS and TOOLSETS are applied when tools are listed but are not rechecked when a tools/call request is dispatched. A client that knows a hidden tool name can directly invoke excluded read, write, or delete tools despite the operator's configured least-privilege restrictions. The advisory traces the vulnerable input and processing flow through ENABLED_TOOLS, TOOLSETS, tools/list, tools/call, and _call_tool_mcp, which identify the affected entry points, controls, and code paths. This issue is fixed in version 0.22.0. | |
| Title | MCP Atlassian: ENABLED_TOOLS / Toolset authorization bypass | |
| Weaknesses | CWE-862 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-09-22T17:57:26.122Z
Updated: 2026-09-22T19:02:45.226Z
Reserved: 2026-08-20T19:02:23.416Z
Link: CVE-2026-77243
Updated: 2026-09-22T19:02:22.493Z
Status : Analyzed
Published: 2026-09-22T18:17:17.410
Modified: 2026-09-29T15:32:58.357
Link: CVE-2026-77243
No data.