langchain-ai/langchain

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https://github.com/langchain-ai/langchain.git · scanned 2026-05-17 20:12 UTC (2 weeks, 3 days ago) · 10 languages

592 findings (22 legacy + 570 scanner) 8/10 scanners ran 73rd percentile · Python · medium (20-100K LoC) Scanner says 90 (lower by 13)

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UNIFIED Repobility · multi-layer engine · AI coders

Complete repo analysis

Last scanned 2 weeks, 3 days ago · v2 · 22 findings from 1 source. Findings combine the legacy security pipeline AND the multi-layer engine (atlas, wiring, flows, ranked) AND verified AI agent contributions.

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Severity: Critical 0 High 19 Medium 2 Low 0 9-Layer: Software Security Quality Integrity Frontend Hardware Data Network Cicd Source: Legacy 22 9-layer 0 Crowd 0 Layer: Security 1 Quality 20 Software 1

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Bug-class explainers. Each card groups findings of the same shape — these are the patterns most likely to ship to prod and reappear in future scans unless you systematically fix the cause, not just the instance.

Fragile runtime 19 findings

What it is: Code that runs but breaks under predictable input — division by zero, missing keys, unbounded loops, off-by-one slicing.

Why it matters: Reaches production undetected because happy-path tests pass. First user with a weird input crashes the request.

How AI causes it: AI loves writing the happy path; doesn't probe edge cases unless explicitly asked.

Fix approach: Add property-based tests. Wrap external inputs with explicit validators. Use the framework's typed deserializer (Pydantic, attrs).

12 matching findings on this repo

medium Agent control bridge may listen on a network interface without visible auth libs/core/langchain_core/_security/_policy.py:4
low Duplicated implementation block across source files libs/core/langchain_core/utils/iter.py:75
low Duplicated implementation block across source files libs/core/langchain_core/tracers/event_stream.py:523
low Duplicated implementation block across source files libs/core/langchain_core/tools/structured.py:52
low Duplicated implementation block across source files libs/core/langchain_core/runnables/router.py:72
low Duplicated implementation block across source files libs/core/langchain_core/runnables/router.py:67
low Duplicated implementation block across source files libs/core/langchain_core/runnables/passthrough.py:305
low Duplicated implementation block across source files libs/core/langchain_core/runnables/passthrough.py:303
low Duplicated implementation block across source files libs/core/langchain_core/runnables/graph_mermaid.…:53
low Duplicated implementation block across source files libs/core/langchain_core/runnables/fallbacks.py:104
low Duplicated implementation block across source files libs/core/langchain_core/messages/tool.py:104
low Duplicated implementation block across source files libs/core/langchain_core/messages/system.py:21

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