CVE-2026-27966

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{"affected": [{"affectedData": [{"product": "langflow", "vendor": "langflow-ai", "versions": [{"status": "affected", "version": "< 1.8.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:langflow:langflow:*:*:*:*:*:*:*:*", "matchCriteriaId": "2F2C3DDC-4ECF-4814-AC58-D3D09E54D9B2", "versionEndExcluding": "1.8.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.8.0, the CSV Agent node in Langflow hardcodes `allow_dangerous_code=True`, which automatically exposes LangChain\u2019s Python REPL tool (`python_repl_ast`). As a result, an attacker can execute arbitrary Python and OS commands on the server via prompt injection, leading to full Remote Code Execution (RCE). Version 1.8.0 fixes the issue."}, {"lang": "es", "value": "Langflow es una herramienta para construir y desplegar agentes y flujos de trabajo impulsados por IA. Antes de la versi\u00f3n 1.8.0, el nodo CSV Agent en Langflow codifica de forma r\u00edgida 'allow_dangerous_code=True', lo que expone autom\u00e1ticamente la herramienta Python REPL de LangChain ('python_repl_ast'). Como resultado, un atacante puede ejecutar comandos arbitrarios de Python y del sistema operativo en el servidor a trav\u00e9s de inyecci\u00f3n de prompts, lo que lleva a una ejecuci\u00f3n remota de c\u00f3digo (RCE) completa. La versi\u00f3n 1.8.0 soluciona el problema."}], "id": "CVE-2026-27966", "lastModified": "2026-06-17T10:27:59.160", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-27966", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-02-26T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-02-26T02:16:23.833", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/langflow-ai/langflow/commit/d8c6480daa17b2f2af0b5470cdf5c3d28dc9e508"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/langflow-ai/langflow/security/advisories/GHSA-3645-fxcv-hqr4"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-94"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.8.0)"}}], "enrichment": {"confidence": 92.0, "confidence_source": "matching", "scores": [{"score": 92.0, "source": "matching"}]}, "original": {"product": "langflow", "source": "cna", "vendor": "langflow-ai"}, "product": "langflow", "vendor": "langflow"}], "created": "2026-02-26T13:09:52.632011+00:00", "updated": "2026-10-25T22:00:15.279790+00:00", "vendors": ["langflow", "langflow$PRODUCT$langflow"]}