{"cve":{"cve_id":"CVE-2026-101861","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":0.00197,"epss_percentile":0.08733,"epss_as_of":"2026-10-15","description":"Langflow 1.0.16 before 1.12.0 and 0.0.94 before 1.12.0 contain an unsafe eval() vulnerability in schema.py that allows authenticated attackers to achieve code execution by placing a Python object with a malicious __repr__ method into component input options lists. The eval() sink is triggered when a component is converted into a LangChain tool via ComponentToolkit.get_tools(), including during custom component saves through the API, by interpolating options into a Literal type string that is passed directly to eval() without safe evaluation controls.","published_at":"2026-09-28T15:49:14.349000Z","last_modified_at":"2026-09-30T21:16:55.213000Z","cvss_v3_score":4.1,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L","cvss_v3_severity":"MEDIUM","cvss_v4_score":2.1,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","cvss_v4_severity":"LOW","ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-95","CWE-94"],"nvd_references":["https://github.com/langflow-ai/langflow/security/advisories/GHSA-33p4-w7j3-33mw","https://github.com/langflow-ai/langflow/releases#release-v1.12.0"],"vuln_status":"Awaiting Analysis","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":"2026-09-28T17:38:54.188948Z","updated_at":"2026-10-02T11:10:38.202748Z"},"effective_severity":"LOW","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":"H","value_label":"High"},{"metric":"PR","name":"Privileges Required","value":"H","value_label":"High"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"L","value_label":"Low"},{"metric":"I","name":"Integrity","value":"L","value_label":"Low"},{"metric":"A","name":"Availability","value":"L","value_label":"Low"}]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"H","value_label":"High"},{"metric":"AT","name":"Attack Requirements","value":"P","value_label":"Present"},{"metric":"PR","name":"Privileges Required","value":"H","value_label":"High"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"L","value_label":"Low"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"L","value_label":"Low"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"L","value_label":"Low"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"N","value_label":"None"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"N","value_label":"None"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"}]},"affected":[{"vendor_slug":"langflow-ai","vendor_name":"langflow-ai","product_slug":"langflow","product_name":"langflow","version_start":"1.0.16","version_start_inclusive":true,"version_end":"1.12.0","version_end_inclusive":false,"cpe23_uri":"cve5:langflow-ai:langflow:1.0.16:1.12.0"},{"vendor_slug":"langflow-ai","vendor_name":"langflow-ai","product_slug":"langflow","product_name":"langflow","version_start":"0.0.94","version_start_inclusive":true,"version_end":"1.12.0","version_end_inclusive":false,"cpe23_uri":"cve5:langflow-ai:langflow:0.0.94:1.12.0"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/langflow-ai/langflow/security/advisories/GHSA-33p4-w7j3-33mw","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/langflow-ai/langflow/releases#release-v1.12.0","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2026-09-28T15:49:14.349000Z","label":"CVE published","source":null}]}