Checked other resources

• This is a bug, not a usage question.
• I added a clear and descriptive title that summarizes this issue.
• I used the GitHub search to find a similar question and didn't find it.
• I am sure that this is a bug in LangChain rather than my code.
• The bug is not resolved by updating to the latest stable version of LangChain (or the specific integration package).
• This is not related to the langchain-community package.
• I posted a self-contained, minimal, reproducible example. A maintainer can copy it and run it AS IS.

Package (Required)

• langchain
• langchain-openai
• langchain-anthropic
• langchain-classic
• langchain-core
• langchain-model-profiles
• langchain-tests
• langchain-text-splitters
• langchain-chroma
• langchain-deepseek
• langchain-exa
• langchain-fireworks
• langchain-groq
• langchain-huggingface
• langchain-mistralai
• langchain-nomic
• langchain-ollama
• langchain-perplexity
• langchain-prompty
• langchain-qdrant
• langchain-xai
• Other / not sure / general

Related Issues / PRs

No response

Reproduction Steps / Example Code (Python)

Run any deepagent against a repository with files like `[...nextauth].ts`, see that pathtraversal is flagged

Error Message and Stack Trace (if applicable)

Description

The fileSystemMiddleware looking for path traversal flags files like [...nextauth].ts due to the .... Pattern should be updated to allow [...]

System Info

• Python: 3.12.8
• langchain_core: 1.2.7
• langchain: 1.2.6
• langchain_aws: 1.0.0
• langgraph: 1.0.4
• anthropic: 0.76.0
• boto3: 1.40.45