{"cve":{"cve_id":"CVE-2026-7663","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.0052,"epss_percentile":0.41958,"epss_as_of":"2026-08-26","description":"IBM Langflow OSS 1.0.0 through 1.9.6 could allow unauthenticated attackers to access protected MCP project resources and execute MCP operations due to improper authorization enforcement in the Streamable MCP transport endpoint.","published_at":"2026-06-30T19:16:25.323000Z","last_modified_at":"2026-07-02T18:19:34.267000Z","cvss_v3_score":9.1,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"total","cwes":["CWE-285"],"nvd_references":["https://www.ibm.com/support/pages/node/7277570"],"vuln_status":"Analyzed","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-30T20:43:50.456791Z","updated_at":"2026-07-04T01:43:39.485079Z"},"effective_severity":"CRITICAL","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"ibm","vendor_name":"ibm","product_slug":"langflow-oss","product_name":"langflow_oss","version_start":"1.0.0","version_start_inclusive":true,"version_end":"1.0.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*"},{"vendor_slug":"ibm","vendor_name":"ibm","product_slug":"langflow-oss","product_name":"langflow_oss","version_start":"1.9.6","version_start_inclusive":true,"version_end":"1.9.6","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:ibm:langflow_oss:1.9.6:*:*:*:*:*:*:*"},{"vendor_slug":"langflow","vendor_name":"langflow","product_slug":"langflow","product_name":"langflow","version_start":"1.0.0","version_start_inclusive":true,"version_end":"1.10.0","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"https://www.ibm.com/support/pages/node/7277570","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-06-30T19:16:25.323000Z","label":"CVE published","source":null}]}