Executive Summary

CVE-2026-7524 is a path traversal vulnerability in IBM Langflow OSS versions 1.0.0 through 1.9.1. It arises from improper validation of symbolic links during archive extraction in the _unpack_bundle function. Attackers can exploit this by uploading malicious tar files containing symbolic links to sensitive system files. When these archives are extracted, the attacker can read arbitrary files, including sensitive data like JWT secret keys.

This vulnerability affects multiple file processing components such as Docling, Docling Serve, Read File, NVIDIA Retriever Extraction, Video File, and Unstructured API. Exploiting this flaw can allow attackers to retrieve sensitive data through chatbot queries, bypass authentication by forging JWT tokens, and potentially execute remote code via the Python Interpreter node.

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Impact Analysis

This vulnerability can have severe impacts including unauthorized access to sensitive files on the system, such as JWT secret keys. Attackers can use this access to bypass authentication mechanisms by forging JWT tokens.

Additionally, it can lead to remote code execution through the Python Interpreter node, allowing attackers to run arbitrary code on the affected system. This can compromise the confidentiality, integrity, and availability of the system and its data.

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Detection Guidance

This vulnerability involves improper validation of symbolic links during archive extraction in Langflow OSS versions 1.0.0 through 1.9.1. Detection would involve identifying if these vulnerable versions are in use and monitoring for suspicious archive extraction activities involving symbolic links.

Specifically, detection could focus on checking for the presence of malicious tar files containing symbolic links that point to sensitive files, such as JWT secret keys, being uploaded or extracted.

However, no specific detection commands or tools are provided in the available information.

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Mitigation Strategies

The immediate and recommended step to mitigate this vulnerability is to upgrade IBM Langflow OSS to version 1.9.2 or later, where the issue has been fixed.

There are no available workarounds, so applying the official fix promptly is critical to reduce the risk of remote code execution and data compromise.

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Compliance Impact

The vulnerability in IBM Langflow OSS allows attackers to read arbitrary sensitive files, including JWT secret keys, which can lead to authentication bypass and remote code execution. This exposure of sensitive data and potential unauthorized access could result in violations of data protection regulations such as GDPR and HIPAA, which mandate strict controls over personal and sensitive information.

Organizations using affected versions should promptly upgrade to Langflow OSS version 1.9.2 to mitigate risks that could impact compliance with these standards.

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