{"action":"Upgrade mcp-atlassian to 0.22.0 or later.","affected":[{"fixed":"0.22.0","introduced":"0"}],"component":"mcp-atlassian","cve_ids":["CVE-2026-77259"],"ecosystem":"PyPI","epss":0.00408,"exploited":false,"fixed_versions":["0.22.0"],"ghsa_id":"GHSA-6cr4-ccf3-x7h4","id":"tcs_01M5KH9SEPPPAPPTAYRRY37D80","modified_at":"2026-10-01T17:45:11.764906241Z","published_at":"2026-10-01T16:38:35.781045Z","references":["https://osv.dev/vulnerability/PYSEC-2026-4086","https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-6cr4-ccf3-x7h4","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-6cr4-ccf3-x7h4","https://nvd.nist.gov/vuln/detail/CVE-2026-77259"],"severity":{"label":"high","score":7.7},"sources":[{"source":"osv","source_id":"PYSEC-2026-4086","url":"https://osv.dev/vulnerability/PYSEC-2026-4086"}],"summary":"MCP Atlassian: Arbitrary file read via confluence_upload_attachment allows exfiltration of server credentials"}