{"action":"Upgrade arcade-mcp-server to 1.9.1 or later.","affected":[{"fixed":"1.9.1","introduced":"0"}],"component":"arcade-mcp-server","cve_ids":["CVE-2025-66454"],"ecosystem":"PyPI","epss":0.00313,"exploited":false,"fixed_versions":["1.9.1"],"ghsa_id":"GHSA-g2jx-37x6-6438","id":"tcs_01M5KGR428XY8929DPCDN3QEN3","modified_at":"2026-07-07T17:47:11.010147192Z","published_at":"2026-07-07T16:03:11.970274Z","references":["https://osv.dev/vulnerability/PYSEC-2026-1192","https://github.com/ArcadeAI/arcade-mcp/security/advisories/GHSA-g2jx-37x6-6438","https://nvd.nist.gov/vuln/detail/CVE-2025-66454","https://github.com/ArcadeAI/arcade-mcp/pull/691","https://github.com/ArcadeAI/arcade-mcp/commit/44660d18ceb220600401303df860a31ca766c817","https://github.com/ArcadeAI/arcade-mcp/commit/7fb097f20fbea35e382a1b78da6fd90609c55a9e","https://github.com/ArcadeAI/arcade-mcp","https://pypi.org/project/arcade-mcp-server","https://github.com/advisories/GHSA-g2jx-37x6-6438"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"PYSEC-2026-1192","url":"https://osv.dev/vulnerability/PYSEC-2026-1192"}],"summary":"arcade-mcp-server Has Default Hardcoded Worker Secret That Allows Full Unauthorized Access to All HTTP MCP Worker Endpoints"}