{"action":"Upgrade mcp-atlassian to 0.22.0 or later.","affected":[{"fixed":"0.22.0","introduced":"0"}],"component":"mcp-atlassian","cve_ids":["CVE-2026-77261"],"ecosystem":"PyPI","epss":0.00373,"exploited":false,"fixed_versions":["0.22.0"],"ghsa_id":"GHSA-6529-c226-h328","id":"tcs_01M5KF2F1470B954QKWPQS7DK3","modified_at":"2026-10-01T17:55:40.753846272Z","published_at":"2026-09-22T20:35:13Z","references":["https://osv.dev/vulnerability/GHSA-6529-c226-h328","https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-6529-c226-h328","https://nvd.nist.gov/vuln/detail/CVE-2026-77261","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":7.1},"sources":[{"source":"osv","source_id":"GHSA-6529-c226-h328","url":"https://osv.dev/vulnerability/GHSA-6529-c226-h328"}],"summary":"MCP Atlassian: SSRF redirect protection missing for basic-auth and OAuth authentication branches"}