CVE-2026-21445: Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.7.0.dev45, multiple cr
Summary
Langflow, a tool for building AI-powered agents and workflows, has a security flaw in versions before 1.7.0.dev45 where some API endpoints (the interfaces that software uses to communicate and request data) are missing authentication controls (checks to verify who is using them). This allows anyone without a login to access private user conversations, transaction histories, and delete messages. The vulnerability affects endpoints that handle sensitive personal data and system operations.
Solution / Mitigation
Update to version 1.7.0.dev45 or later, which contains a patch for this vulnerability.
Vulnerability Details
9.1(critical)
EPSS: 0.1%
Classification
Affected Vendors
Related Issues
CVE-2024-27444: langchain_experimental (aka LangChain Experimental) in LangChain before 0.1.8 allows an attacker to bypass the CVE-2023-
CVE-2025-45150: Insecure permissions in LangChain-ChatGLM-Webui commit ef829 allows attackers to arbitrarily view and download sensitive
Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-21445
First tracked: February 15, 2026 at 08:48 PM
Classified by LLM (prompt v3) · confidence: 95%