{"id":"CVE-2026-109332","summary":"Network-AI before 5.15.2 CORS Origin Validation Error in MCP SSE Transport","details":"Network-AI (npm network-ai) before 5.15.2 contains an origin validation error in McpSseServer._handleRequest in lib/mcp-transport-sse.ts that reflects localhost Origins into Access-Control-Allow-Origin regardless of bind interface. When the server binds a non-loopback address, an attacker page with a localhost Origin visited by a victim can read unauthenticated endpoints like /health cross-origin.","aliases":["GHSA-4pvg-m42h-c3x2"],"modified":"2026-10-13T02:46:56.758503421Z","published":"2026-10-12T16:05:21.175Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-346"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109332.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109332.json"},{"type":"ADVISORY","url":"https://github.com/Jovancoding/Network-AI/security/advisories/GHSA-4pvg-m42h-c3x2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109332"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/network-ai-before-5.15.2-cors-origin-validation-error-in-mcp-sse-transport"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/jovancoding/network-ai","events":[{"introduced":"0"},{"fixed":"6bc2b9114cc42faa8d8f528c93b409b70db5ec2f"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0"},{"fixed":"5.15.2"}]}}],"versions":["v5.15.1","v5.15.0","v5.14.0","v5.13.4","v5.13.3","v5.13.2","v5.13.1","v5.13.0","v5.12.7","v5.12.6","v5.12.5","v5.12.4","v5.12.3","v5.12.2","v5.12.1","v5.12.0","v5.11.0","v5.10.2","v5.10.1","v5.10.0","v5.9.1","v5.9.0","v5.8.9","v5.8.8","v5.8.7","v5.8.6","v5.8.5","v5.8.4","v5.8.3","v5.8.2","v5.8.1","v5.8.0","v5.7.2","v5.7.1","v5.7.0","v5.6.1","v5.6.0","v5.5.9","v5.5.8","v5.5.7","v5.5.6","v5.5.5","v5.5.4","v5.5.3","v5.5.2","v5.5.1","v5.5.0","v5.4.5","v5.4.4","v5.4.3","v5.4.2","v5.4.1","v5.4.0","v5.3.2","v5.3.1","v5.3.0","v5.2.2","v5.2.1","v5.2.0","v5.1.4","v5.1.3","v5.1.2","v5.1.1","v5.1.0","v5.0.0","v4.15.3","v4.15.2","v4.15.1","v4.15.0","v4.14.0","v4.13.1","v4.13.0","v4.12.1","v4.12.0","v4.11.2","v4.11.1","v4.11.0","v4.10.5","v4.10.4","v4.10.3","v4.10.2","v4.10.1","v4.10.0","v4.9.1","v4.9.0","v4.8.1","v4.8.0","v4.7.1","v4.7.0","v4.6.2","v4.6.1","v4.6.0","v4.5.3","v4.5.2","v4.5.1","v4.5.0","v4.4.3","v4.4.2","v4.4.1","v4.4.0","v4.3.7","v4.3.6","v4.3.5","v4.3.4","v4.3.3","v4.3.2","v4.3.1","v4.3.0","v4.2.0","v4.1.0","v4.0.17","v4.0.16","v4.0.15","v4.0.14","v4.0.13","v4.0.12","v4.0.11","v4.0.10","v4.0.9","v4.0.8","v4.0.7","v4.0.6","v4.0.5","v4.0.4","v4.0.3","v4.0.2","v4.0.1","v4.0.0","v3.9.0","v3.8.0","v3.7.1","v3.7.0","v3.6.2","v3.6.0","v3.5.1","v3.5.0","v3.4.1","v3.4.0","v3.3.11","v3.3.10","v3.3.9","v3.3.8","v3.3.7","v3.3.6","v3.3.5","v3.3.4","v3.3.3","v3.3.2","v3.3.1","v3.3.0","v3.2.11","v3.2.10","v3.2.9","v3.2.8","v3.2.7","v3.2.6","v3.2.5","v3.2.4","v3.2.3","v3.2.2","v3.2.1","v3.2.0","v3.1.3","v3.1.2","v3.1.0","v3.0.3","v3.0.2","v3.0.1","v3.0.0","v2.0.0","V1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109332.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"}]}