{"items":[{"id":"NVI-00013832","kind":"vulnerability","title":"MCP Atlassian: Arbitrary server-local file upload to Jira/Confluence attachments via unrestricted file_path parameters","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-f6pj-qv47-g96w","CVE-2026-77247"],"plain_summary":"GitHub lists this reviewed advisory for mcp-atlassian. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-0d0336d2eb398958da159467e027ca17"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-0d0336d2eb398958da159467e027ca17","url":"https://github.com/advisories/GHSA-f6pj-qv47-g96w","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-f6pj-qv47-g96w","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:31.527Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-0d0336d2eb398958da159467e027ca17"],"technology":"mcp-atlassian","known_exclusions":[],"conditions_summary":"## Summary\n\nThe Jira and Confluence attachment upload tools accept caller-controlled file path parameters and read those paths from the MCP server's local filesystem before uploading the file as an Atlassian attachment.\n\nIn local `stdio` deployments, this can expose files readable by the user's MCP process. In documented HTTP/SSE or `streamable-http` deployments, the impact is higher: any MCP client that is allowed to invoke write/upload tools can cause the server process to read a server-local file and upload it to Jira or Confluence.\n\nThis is not dependent on an AI prompt injection or model behavior. It can be triggered deterministically with a normal MCP tool call.\n\n## Details\n\nThe vulnerable behavior exists because upload tool arguments are treated as server-local filesystem paths.\n\nRelevant implementation points:\n\n- `mcp_atlassian.confluence.attachments.AttachmentsMixin.upload_attachment`\n  - Accepts `file_path`.\n  - Converts the supplied value to an absolute path when needed.\n  - Checks existence with `os.path.exists`.\n  - Passes the path into the attachment upload flow.\n\n- `mcp_atlassian.confluence.attachments.AttachmentsMixin._upload_attachment_direct`\n  - Opens the supplie","public_affected_ranges":["< 0.22.0"]}],"null_published_at":"2026-11-02T10:00:37.157Z","source_updated_at":"2026-09-22T20:36:31.000Z","source_disclosed_at":"2026-09-22T20:36:29.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-01T14:29:31.527Z"}],"next_cursor":null,"snapshot_revision":"42594"}