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Published Aug 5, 2026· Updated Aug 8, 2026· 1 source

IBM Langflow OSS: 23 Vulnerabilities Disclosed Together, Enabling Code Execution and Data Breaches

Key findings • 23 vulnerabilities disclosed simultaneously for IBM Langflow OSS, affecting versions 1.0.0 through 1.10.3. • Multiple High-severity flaws enable arbitrary code execution, authe…

Key findings

  • 23 vulnerabilities disclosed simultaneously for IBM Langflow OSS, affecting versions 1.0.0 through 1.10.3.
  • Multiple High-severity flaws enable arbitrary code execution, authentication bypass, and SSRF.
  • Path traversal and file manipulation vulnerabilities allow access to sensitive system files and data.
  • Weaknesses in cryptographic key derivation and component validation pose significant security risks.
  • Users are urged to update immediately to patch these widespread security issues.

On August 5, 2026, a significant batch of 23 vulnerabilities was disclosed for IBM's Langflow OSS, a popular open-source project for orchestrating large language models. The vulnerabilities, disclosed within a two-hour window, span a wide range of severity, with many rated as High, posing severe risks to users. These flaws could allow for arbitrary code execution, authentication bypass, Server-Side Request Forgery (SSRF), and unauthorized access to sensitive system files and data.

Several vulnerabilities center around improper handling of user input and component validation, leading to code injection and arbitrary code execution. CVE-2026-8478 and CVE-2026-17633, both rated High, allow remote attackers to inject arbitrary code due to improper control of user input and code injection, respectively. Similarly, CVE-2026-9201 (High) and CVE-2026-17632 (High) exploit cryptographic weaknesses and improper validation of Python code during security scanning to enable arbitrary code execution. CVE-2026-9196 (High) allows unintended code execution during Agentic Assistant validation due to improper handling of LLM-generated components.

Path traversal and directory manipulation vulnerabilities are also prevalent in this batch. CVE-2026-8183 (High) allows remote attackers to traverse directories using "dot dot" sequences. CVE-2026-7869 (Medium) and CVE-2026-7646 (Medium) exploit path traversal in API endpoints to access sensitive files, including JWT signing secrets and environment variables. CVE-2026-10128 (Medium) allows authenticated users to read arbitrary server environment variables, and CVE-2026-17626 (High) enables authenticated attackers to read, modify, or expose sensitive host files via Docker-based MCP servers.

Cryptographic weaknesses contribute to the risk profile of this batch. CVE-2026-9205 (High) and CVE-2026-8470 (High) involve weak cryptographic key derivation due to the use of Python's non-cryptographic random module for generating encryption keys from user secrets, potentially allowing for key predictability.

Authentication bypass and authorization flaws are present as well. CVE-2026-8446 (High) describes an authentication bypass in the Model Context Protocol (MCP) composer endpoint. CVE-2026-1930 (High) involves an authorization bypass in the MemoryComponent, allowing authenticated users to access chat history of other users. CVE-2026-9077 (High) allows remote authenticated attackers to bypass localhost-only restrictions and write arbitrary MCP server configurations.

Server-Side Request Forgery (SSRF) is another significant concern. CVE-2026-9081 (High) and CVE-2026-7657 (Medium) detail SSRF vulnerabilities where user-supplied URLs are not properly validated, allowing attackers to make requests to arbitrary internal or external resources.

The vulnerabilities affect Langflow OSS versions 1.0.0 through 1.10.3. Users are strongly urged to update to the latest version to mitigate these widespread security issues.

This extensive batch of vulnerabilities underscores the importance of rigorous security auditing for open-source projects, especially those handling sensitive data and executing user-provided code. The simultaneous disclosure of these 23 flaws highlights a critical period for Langflow OSS users to apply patches and review their security configurations.

The affected versions are 1.0.0 through 1.10.3. Patches are available in subsequent releases.

This batch of vulnerabilities highlights critical areas for improvement in Langflow OSS, including input validation, cryptographic key management, and access control mechanisms. Users should prioritize updating their installations and remain vigilant for future security advisories. ,cve_ids:[

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