{"cve":{"cve_id":"CVE-2026-9198","is_kev":true,"kev_date_added":"2026-08-04","kev_vendor_project":"IBM","kev_product":"Langflow","kev_vulnerability_name":"IBM Langflow Code Injection Vulnerability","kev_short_description":"Langflow contains a code injection vulnerability that allows unauthenticated attackers to achieve full remote code execution on default Langflow deployments.","kev_required_action":"Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.","kev_due_date":"2026-08-07","kev_known_ransomware":false,"kev_notes":"https://www.ibm.com/support/pages/node/7278927 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-9198","kev_cwes":["CWE-94"],"epss_score":0.34734,"epss_percentile":0.98302,"epss_as_of":"2026-08-26","description":"IBM Langflow OSS 1.0.0 through 1.10.0 allows unauthenticated attackers to chain /api/v1/auto_login (mints SUPERUSER tokens to any network caller) with /api/v1/validate/code (executes user code via exec()) to achieve full RCE on default Langflow deployments","published_at":"2026-07-17T17:36:11.246000Z","last_modified_at":"2026-08-17T20:16:48.010000Z","cvss_v3_score":9.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"active","ssvc_automatable":true,"ssvc_technical_impact":"total","cwes":["CWE-94"],"nvd_references":["https://www.ibm.com/support/pages/node/7278927"],"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":"2026-07-17T18:36:28.550283Z","updated_at":"2026-08-19T16:41:57.515079Z"},"effective_severity":"CRITICAL","badges":["kev","poc","news"],"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":"H","value_label":"High"}]},"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":"1.10.0","version_start_inclusive":true,"version_end":"1.10.0","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:ibm:langflow_oss:1.10.0:*:*:*:*:*:*:*"},{"vendor_slug":"langflow","vendor_name":"langflow","product_slug":"langflow","product_name":"langflow","version_start":"1.0.0","version_start_inclusive":true,"version_end":"1.10.1","version_end_inclusive":false,"cpe23_uri":"cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*"}],"exploit_refs":[{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-9198.yaml","title":"IBM Langflow - Remote Code Execution","author":"YesWeHack","disclosed_at":null}],"news":[{"id":1009,"source":"The Hacker News","url":"https://thehackernews.com/2026/08/cisa-flags-langflow-rce-tomcat-and-n.html","title":"CISA Flags Langflow RCE, Tomcat, and N-central Flaws as Actively Exploited","summary":"The U.S. Cybersecurity and Infrastructure Security Agency (CISA), on August 5, 2026, added three flaws to its Known Exploited Vulnerabilities (KEV) catalog, citing evidence of active exploitation in the wild.\n\nThe list of vulnerabilities is as follows -\n\n\n  CVE-2026-9198 (CVSS score: 9.8) - A code injection vulnerability in Langflow that allows unauthenticated attackers to achieve full remote","thumbnail_url":"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjU9CZ3zh4mWF0SVRdcylBR7IyGB6j797LrHqyND8vcsBbiE6mcDlqaufSOBg2Av4Ej_HZ_gMxbzR-KS6GvXX0hLPgSFlh5gwxKwhjx3FvcdsQ7XP65x70cxeadgTM7uETFglAUoZrxwq9Rmx6i1T4yS-E7c7Szx9igRmM_GqG-8L5xfKYk2i3fhQGEHjez/s1600/cisa.jpg","author":"info@thehackernews.com (The Hacker News)","published_at":"2026-08-05T07:40:39Z","fetched_at":"2026-08-05T09:23:38.749573Z","trending_score":0.0005551969497862802,"cve_ids":["CVE-2026-9198"]}],"references":[{"url":"https://www.ibm.com/support/pages/node/7278927","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2026-07-17T17:36:11.246000Z","label":"CVE published","source":null},{"type":"poc_available","at":"2026-07-28T19:02:23.265074Z","label":"Public PoC available","source":"nuclei"},{"type":"cisa_reported","at":"2026-08-04T00:00:00Z","label":"Added to CISA KEV catalog","source":"kev"},{"type":"ssvc_changed","at":"2026-08-04T18:41:38.297163Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"first_article","at":"2026-08-05T07:40:39Z","label":"First news coverage","source":"The Hacker News"}]}