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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Langchain Langchain
cpe:2.3:a:langchain:langchain:*:*:*:*:*:*:*:*
|
— |
1.2.22
|
References 3
https://github.com/langchain-ai/langchain/commit/27add913474e01e33bededf4096151…
security-advisories@github.com
https://github.com/langchain-ai/langchain/releases/tag/langchain-core==1.2.22
security-advisories@github.com
https://github.com/langchain-ai/langchain/security/advisories/GHSA-qh6h-p6c9-ff…
security-advisories@github.com