MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, upload_attachment in src/mcp_atlassian/confluence/attachments.py accepts a caller-controlled file_path and opens the selected server-local file without restricting it to the workspace. A permitted Confluence MCP caller can upload the file as an attachment and disclose data readable by the server process. This issue is fixed in version 0.22.0.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| sooperset | mcp-atlassian | affected |
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References
History
Tue, 22 Sep 2026 17:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, upload_attachment in src/mcp_atlassian/confluence/attachments.py accepts a caller-controlled file_path and opens the selected server-local file without restricting it to the workspace. A permitted Confluence MCP caller can upload the file as an attachment and disclose data readable by the server process. This issue is fixed in version 0.22.0. | |
| Title | MCP Atlassian: Arbitrary file read/exfiltration via upload_attachment missing validate_safe_path() | |
| Weaknesses | CWE-22 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-09-22T17:39:28.501Z
Reserved: 2026-08-20T19:02:23.417Z
Link: CVE-2026-77258
Vulnrichment
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NVD
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Redhat
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OpenCVE Enrichment
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Weaknesses