#langflow Tech News.
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Hackers are actively exploiting a Langflow vulnerability disclosed in March. The security defect allows unauthenticated attackers to write files to arbitrary locations on the system, enabling remote code execution. Organizations using Langflow should apply patches immediately.
Attackers are actively exploiting CVE-2026-5027, a high-severity path traversal vulnerability in Langflow's file upload endpoint. The flaw allows writing arbitrary files on exposed servers. Tenable discovered the issue and disclosed it on March 27, 2026. A patch was released in Langflow version 1.9.0.
CVE-2026-5027, a path traversal vulnerability in Langflow with a CVSS score of 8.8, is being actively exploited for unauthenticated remote code execution. The flaw allows attackers to write files to arbitrary locations via the POST /api/v2/files endpoint. Approximately 7,000 Langflow instances are publicly exposed, mostly in North America.
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