CVE-2026-34070 (GCVE-0-2026-34070)
Vulnerability from cvelistv5
Published
2026-03-31 02:01
Modified
2026-03-31 18:04
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Summary
LangChain is a framework for building agents and LLM-powered applications. Prior to version 1.2.22, multiple functions in langchain_core.prompts.loading read files from paths embedded in deserialized config dicts without validating against directory traversal or absolute path injection. When an application passes user-influenced prompt configurations to load_prompt() or load_prompt_from_config(), an attacker can read arbitrary files on the host filesystem, constrained only by file-extension checks (.txt for templates, .json/.yaml for examples). This issue has been patched in version 1.2.22.
Impacted products
Vendor Product Version
langchain-ai langchain Version: < 1.2.22
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Show details on NVD website


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