{"items":[{"id":"NVI-00013916","kind":"vulnerability","title":"MCP Atlassian: Arbitrary local file READ via unconstrained file_path in upload_attachment (Confluence + Jira)","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-f4p7-qx46-wc5j","CVE-2026-77260"],"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-0248b6cdfa9f97aabc1e3fe9f90f61eb"],"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":"EPSS","as_of":"2026-11-05T12:03:04.000Z","value":"0.385%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.32728. Missing scores are unknown.","source_id":"sr-0248b6cdfa9f97aabc1e3fe9f90f61eb"}],"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-1ca8f0b89eb938eafcecaa0e179e82cb","url":"https://github.com/advisories/GHSA-f4p7-qx46-wc5j","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-f4p7-qx46-wc5j","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:31.527Z"},{"id":"sr-0248b6cdfa9f97aabc1e3fe9f90f61eb","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-77260","publisher":"FIRST EPSS","observed_at":"2026-11-06T07:17:46.398Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1ca8f0b89eb938eafcecaa0e179e82cb"],"technology":"mcp-atlassian","known_exclusions":[],"conditions_summary":"## Summary\n\nThis is an arbitrary local file READ vulnerability on the Confluence and Jira `upload_attachment` tool paths. It's the symmetric counterpart of the file-write vulnerability you patched as CVE-2026-27825. The write direction was fixed; the read direction was left open.\n\n**Reporter:** Sean Valentine\n**Severity:** High (Critical in LLM-driven / prompt-injection deployments)\n**Affected versions:** main branch as of 2026-04-21. Both Confluence and Jira upload paths.\n\n## Details\n\n**File:** `src/mcp_atlassian/confluence/attachments.py` lines 62-78 and 477\n\n```python\ntry:\n    if not os.path.isabs(file_path):\n        file_path = os.path.abspath(file_path)\n    if not os.path.exists(file_path):\n        return {\"success\": False, \"error\": f\"File not found: {file_path}\"}\n    ...\n    attachment = self._upload_attachment_direct(content_id, file_path, filename, comment, minor_edit)\n\n# attachments.py L477\nfiles = {\"file\": (filename, open(file_path, \"rb\"))}\n```\n\nSame shape in `src/mcp_atlassian/jira/attachments.py` around lines 374-386.\n\n`validate_safe_path()` was added to the download paths as the CVE-2026-27825 fix, but the symmetric upload paths were never updated. `os.path.abspath()` ","public_affected_ranges":["< 0.22.0"]}],"null_published_at":"2026-11-07T07:07:42.525Z","source_updated_at":"2026-09-22T20:35:01.000Z","source_disclosed_at":"2026-09-22T20:35:00.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-01T14:29:31.527Z"},{"id":"NVI-00013916","kind":"vulnerability","title":"MCP Atlassian: Arbitrary local file READ via unconstrained file_path in upload_attachment (Confluence + Jira)","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-f4p7-qx46-wc5j","CVE-2026-77260"],"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-1ca8f0b89eb938eafcecaa0e179e82cb"],"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-1ca8f0b89eb938eafcecaa0e179e82cb","url":"https://github.com/advisories/GHSA-f4p7-qx46-wc5j","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-f4p7-qx46-wc5j","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T14:29:31.527Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-1ca8f0b89eb938eafcecaa0e179e82cb"],"technology":"mcp-atlassian","known_exclusions":[],"conditions_summary":"## Summary\n\nThis is an arbitrary local file READ vulnerability on the Confluence and Jira `upload_attachment` tool paths. It's the symmetric counterpart of the file-write vulnerability you patched as CVE-2026-27825. The write direction was fixed; the read direction was left open.\n\n**Reporter:** Sean Valentine\n**Severity:** High (Critical in LLM-driven / prompt-injection deployments)\n**Affected versions:** main branch as of 2026-04-21. Both Confluence and Jira upload paths.\n\n## Details\n\n**File:** `src/mcp_atlassian/confluence/attachments.py` lines 62-78 and 477\n\n```python\ntry:\n    if not os.path.isabs(file_path):\n        file_path = os.path.abspath(file_path)\n    if not os.path.exists(file_path):\n        return {\"success\": False, \"error\": f\"File not found: {file_path}\"}\n    ...\n    attachment = self._upload_attachment_direct(content_id, file_path, filename, comment, minor_edit)\n\n# attachments.py L477\nfiles = {\"file\": (filename, open(file_path, \"rb\"))}\n```\n\nSame shape in `src/mcp_atlassian/jira/attachments.py` around lines 374-386.\n\n`validate_safe_path()` was added to the download paths as the CVE-2026-27825 fix, but the symmetric upload paths were never updated. `os.path.abspath()` ","public_affected_ranges":["< 0.22.0"]}],"null_published_at":"2026-11-02T10:00:37.174Z","source_updated_at":"2026-09-22T20:35:01.000Z","source_disclosed_at":"2026-09-22T20:35:00.000Z","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"}