{"cve":{"cve_id":"CVE-2025-3248","is_kev":true,"kev_date_added":"2025-05-05","kev_vendor_project":"Langflow","kev_product":"Langflow","kev_vulnerability_name":"Langflow Missing Authentication Vulnerability","kev_short_description":"Langflow contains a missing authentication vulnerability in the /api/v1/validate/code endpoint that allows a remote, unauthenticated attacker to execute arbitrary code via crafted HTTP requests.","kev_required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","kev_due_date":"2025-05-26","kev_known_ransomware":false,"kev_notes":"This vulnerability affects a common open-source project, third-party library, or a protocol used by different products. For more information, please see: https://github.com/advisories/GHSA-c995-4fw3-j39m ; https://nvd.nist.gov/vuln/detail/CVE-2025-3248","kev_cwes":["CWE-306"],"epss_score":0.99959,"epss_percentile":0.99974,"epss_as_of":"2026-06-23","description":"Langflow versions prior to 1.3.0 are susceptible to code injection in \nthe /api/v1/validate/code endpoint. A remote and unauthenticated attacker can send crafted HTTP requests to execute arbitrary\ncode.","published_at":"2025-04-07T14:22:38.980000Z","last_modified_at":null,"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":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-306"],"nvd_references":["https://github.com/langflow-ai/langflow/pull/6911","https://github.com/langflow-ai/langflow/releases/tag/1.3.0","https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/","https://www.vulncheck.com/advisories/langflow-unauthenticated-rce"],"vuln_status":null,"trending_score":0.6099294328198237,"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":"2026-06-24T00:09:31.350578Z","updated_at":"2026-06-29T02:30:27.550645Z"},"effective_severity":"CRITICAL","badges":["kev","poc","epss"],"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":"langflow-ai","vendor_name":"langflow-ai","product_slug":"langflow","product_name":"langflow","version_start":"0","version_start_inclusive":true,"version_end":"1.3.0","version_end_inclusive":false,"cpe23_uri":"cve5:langflow-ai:langflow:0:1.3.0"}],"exploit_refs":[{"source":"nuclei","kind":"nuclei","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-3248.yaml","title":"Langflow AI - Unauthenticated Remote Code Execution","author":"nvn1729","disclosed_at":null}],"news":[],"references":[{"url":"https://github.com/langflow-ai/langflow/pull/6911","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/langflow-ai/langflow/releases/tag/1.3.0","source_type":"PATCH","tags":["patch"]},{"url":"https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/","source_type":"MISC","tags":[]},{"url":"https://www.vulncheck.com/advisories/langflow-unauthenticated-rce","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2025-04-07T14:22:38.980000Z","label":"CVE published","source":null},{"type":"cisa_reported","at":"2025-05-05T00:00:00Z","label":"Added to CISA KEV catalog","source":"kev"},{"type":"poc_available","at":"2026-06-24T00:29:48.638073Z","label":"Public PoC available","source":"nuclei"},{"type":"cvss_changed","at":"2026-06-28T17:45:52.194190Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:45:52.194190Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:45:52.194190Z","label":"CVSS score revised","source":"cvelistv5"}]}