NVIDIA-NeMo / NVIDIA-NeMo/Guardrails

[Security] Logging Captures Sensitive LLM Outputs - Data Leak

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Dominant language
Python
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Description

Description

Debug logs capture full LLM outputs including potentially sensitive data. Logs exposed to unauthorized users.

Expected Behavior

Don't log LLM outputs. Or hash/redact sensitive parts.

Actual Behavior

File: src/logging/logger.py
Logs everything: logger.debug(f"LLM output: {output}")

GSSoC Points Estimate: Level 2 (Security)

Suggested Labels

  • gssoc:approved
  • type:bug
  • severity:high
  • area:security

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with src/logging/logger.py and inspect the debug logging of the LLM output. Determine whether outputs should be omitted or protected through hashing or redaction, then verify that sensitive LLM content is no longer exposed in debug logs.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
security
Issue type
Bug
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Quiet
Clarity
Mostly clear
Newbie friendliness
68/100

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