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PYSEC-2026-1531

Langroid has a Code Injection vulnerability in LanceDocChatAgent through vector_store

Quick fix

PYSEC-2026-1531 — langroid: upgrade to the fixed version with the command below.

pip install --upgrade 'langroid>=0.53.15'

Details

### Summary [LanceDocChatAgent](https://github.com/langroid/langroid/blob/main/langroid/agent/special/lance_doc_chat_agent.py#L158) uses pandas eval() through `compute_from_docs()`: https://github.com/langroid/langroid/blob/18667ec7e971efc242505196f6518eb19a0abc1c/langroid/vector_store/base.py#L136-L150

As a result, an attacker may be able to make the agent run malicious commands through [QueryPlan.dataframe_calc](https://github.com/langroid/langroid/blob/main/langroid/agent/special/lance_tools.py#L16) compromising the host system.

### Fix Langroid 0.53.15 sanitizes input to the affected function by default to tackle the most common attack vectors, and added several warnings about the risky behavior in the project documentation.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/langroid
Introduced in: 0Fixed in: 0.53.15
Fixpip install --upgrade 'langroid>=0.53.15'

References