{"action":"Upgrade mcp-atlassian to 0.22.0 or later.","affected":[{"fixed":"0.22.0","introduced":"0"}],"component":"mcp-atlassian","cve_ids":["CVE-2026-77260"],"ecosystem":"PyPI","epss":0.00385,"exploited":false,"fixed_versions":["0.22.0"],"ghsa_id":"GHSA-f4p7-qx46-wc5j","id":"tcs_01M5KH9TSN8M2X5KDVSCCBN36R","modified_at":"2026-10-01T17:45:10.995090495Z","published_at":"2026-10-01T16:38:35.334311Z","references":["https://osv.dev/vulnerability/PYSEC-2026-4091","https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-f4p7-qx46-wc5j","https://nvd.nist.gov/vuln/detail/CVE-2026-77260","https://github.com/sooperset/mcp-atlassian/pull/1448","https://github.com/sooperset/mcp-atlassian/commit/b041733473f95119dd539542a43c280737a8e460","https://github.com/sooperset/mcp-atlassian","https://github.com/sooperset/mcp-atlassian/releases/tag/v0.22.0","https://pypi.org/project/mcp-atlassian","https://github.com/advisories/GHSA-f4p7-qx46-wc5j"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"PYSEC-2026-4091","url":"https://osv.dev/vulnerability/PYSEC-2026-4091"}],"summary":"MCP Atlassian: Arbitrary local file READ via unconstrained file_path in upload_attachment (Confluence + Jira)"}