{"action":"Upgrade mcp-atlassian to 0.22.0 or later.","affected":[{"fixed":"0.22.0","introduced":"0"}],"component":"mcp-atlassian","cve_ids":["CVE-2026-77255"],"ecosystem":"PyPI","epss":0.00408,"exploited":false,"fixed_versions":["0.22.0"],"ghsa_id":"GHSA-2xj6-xx86-cwwc","id":"tcs_01M5KETGRKM26QWGDK80PMXCD3","modified_at":"2026-10-01T17:55:51.813579377Z","published_at":"2026-09-22T20:34:52Z","references":["https://osv.dev/vulnerability/GHSA-2xj6-xx86-cwwc","https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-2xj6-xx86-cwwc","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"],"severity":{"label":"high","score":8.6},"sources":[{"source":"osv","source_id":"GHSA-2xj6-xx86-cwwc","url":"https://osv.dev/vulnerability/GHSA-2xj6-xx86-cwwc"}],"summary":"MCP Atlassian: Arbitrary File Read & Exfiltration (Confused Deputy) in JIRA update_issue"}