langchain-ai / langchain Audited
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Executive Summary

"This repository follows a modular architecture with strong maintainability and good documentation. Several dependency vulnerabilities and performance bottlenecks were detected. Addressing the top five issues could reduce technical debt by approximately 18 developer hours."

Primary: Python
Framework: Pydantic / LangChain Core
Build Tool: Poetry
91
Excellent

Overall Repository Health

Repository Size
4.2 MB
Total Files
1,482
Contributors
918
Last Commit
2 hours ago
Architecture Stability 94

Highly modular design. Low coupling in main library entrypoints.

Trend: Stable Optimal
Security & Vulnerability 88

Insecure prompt interpolations detected in core math classes.

Trend: Decreasing Review Req.
Code Maintainability 95

Excellent docstring density. Clean variable tracking scores.

Trend: Improving Optimal

Repository Metrics

Quantitative overview of the codebase volume and environment parameters.

Lines of Code Calculating...
Classes Detected Calculating...
Function Definitions Calculating...
Open Source Dependencies Calculating...
Config Files (pyproject.toml, etc.) Calculating...
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Architecture Analysis

Modular organization and structural layers mapped from the dependency graph.

Observations

  • 📦 Core dependencies are localized correctly inside the repository modules.
  • 🔄 circular reference checks passed.

Security & Vulnerabilities

Detailed verification results against prompt injection, API exposure, and insecure executions.

Critical Findings
0
High Findings
0
Medium & Low Risks
0

Security Vector Highlights

Security analysis is ready. Scanning modules for input validation and credentials security.

Performance Analysis

Analysis of slow operations, memory allocations, and redundant processes.

Detected Bottlenecks

Checking execution profiles...
Performance Index: —

Issue Center

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Critical Security langchain/chains/llm_math/prompt.py:40

Remote Code Execution (RCE) via prompt interpolation in LLMMathChain

~1hr to fix

Description: Raw parameter `{question}` is formatted directly inside a prompt template without border delimiters. The resulting output is run inside Python's code execution interpreter `numexpr.evaluate()`, leading to command execution primitives.

Business Impact: Attacker can read system environment variables, execute code shells, or hijack container execution structures in host machines.
Vulnerable Expression
PROMPT = PromptTemplate( input_variables=["question"], template="Translate this math question into Python code for numexpr: {question}" )

Remediation: Do not execute generated code directly without checking syntax. Format using strict system instructions or isolate interpreters inside sandboxes.

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High Security langchain/retrievers/multi_query.py:33

Prompt Injection in LineListOutputParser

~30m to fix
Medium Performance langchain/chains/stuff.py:244

Synchronous I/O operations block event loop

~45m to fix

Technical Debt

Estimated hours, priority code smells, and complexity hotspots.

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Estimated Technical Debt

Refactoring estimation based on code smells.

Complex Hotspots (Refactoring Required)

Analyzing modules...

Documentation Analysis

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README Completeness Calculating...
API Reference Coverage Calculating...
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92%

Overall Doc Score

Testing Analysis

Coverage statistics, mock safety validation, and critical untested functions.

Branch Test Coverage 82%
Missing Test Files 3 modules
Mocking framework standard suites
Test Coverage: —

AI Blueprint & Actionable Fixes

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