{"action":"Upgrade mcp-atlassian to 0.22.0 or later.","affected":[{"fixed":"0.22.0","introduced":"0"}],"component":"mcp-atlassian","cve_ids":["CVE-2026-77250"],"ecosystem":"PyPI","epss":0.00108,"exploited":false,"fixed_versions":["0.22.0"],"ghsa_id":"GHSA-g5xv-mhgm-v5f6","id":"tcs_01M5KFGY6F2EB3JD2E0YYKCS75","modified_at":"2026-10-01T17:56:14.889051764Z","published_at":"2026-09-22T20:36:34Z","references":["https://osv.dev/vulnerability/GHSA-g5xv-mhgm-v5f6","https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-g5xv-mhgm-v5f6","https://nvd.nist.gov/vuln/detail/CVE-2026-77250","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":"medium","score":6.1},"sources":[{"source":"osv","source_id":"GHSA-g5xv-mhgm-v5f6","url":"https://osv.dev/vulnerability/GHSA-g5xv-mhgm-v5f6"}],"summary":"MCP Atlassian: OAuth fallback token storage writes plaintext access and refresh tokens with group-readable permissions"}