Security vulnerabilities and automated fixes for langchain issues
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A high-severity arbitrary server-side file read vulnerability (GHSA-f4xh-w4cj-qxq8) was discovered in LangSmith SDK's `TracingMiddleware`, affecting versions prior to 0.8.18. An attacker able to influence tracing requests could potentially read arbitrary files from the server's filesystem. Upgrading from version 0.8.15 to 0.8.18 in `poetry.lock` and `pyproject.toml` closes the attack surface entirely.