{"id":"CVE-2026-8446","details":"IBM Langflow OSS 1.0.0 through 1.10.3 contain an authentication bypass vulnerability in the Model Context Protocol (MCP) composer endpoint when mcp_composer_enabled=true (default) and projects are configured with auth_type=oauth .","modified":"2026-11-04T02:47:52.435546796Z","published":"2026-08-05T17:16:55.983Z","database_specific":{},"references":[{"type":"ADVISORY","url":"https://www.ibm.com/support/pages/node/7282147"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/langflow-ai/langflow","events":[{"introduced":"24d9e86885b877ea3e9d03cbc50b963765489721"},{"fixed":"562e5f2d6feeb52a28dfa647e63a1a620fcee334"}],"database_specific":{"extracted_events":[{"source":"CPE_RANGE","cpe":"cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*","range":[{"introduced":"1.0.0"},{"fixed":"1.11.0"}]}]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-8446.json"}}],"schema_version":"1.9.2","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}