GHSA-QH6H-P6C9-FF54 LangChain Core has Path Traversal vulnerabilites in legacy `load_prompt` functions

Summary Multiple functions in langchaincore.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 loadprompt or loadpromptfromconfig...