AIKIDO-2026-513208
langsmith is vulnerable to Exposure of Sensitive Information
38
Low Risk
This Affects:
langsmithTL;DR
The tracing client stores a run's replicas routing configuration on the run model and serializes it as part of the run body. When a run fans out to more than one replica destination, each outbound request carries the full replica list, so every destination receives the API keys, service keys, and authorization headers configured for the other destinations. Credentials scoped to one endpoint are exposed to unrelated endpoints and are written into the request body past TLS termination. The fix excludes the replicas field from serialization while routing logic continues to read it directly.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you configure tracing to fan out runs to more than one replica destination.
Background info
langsmith is vulnerable to Exposure of Sensitive Information in versions 0.4.10 - 0.11.1.
How to fix this
Upgrade the langsmith library to the patch version.
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SOC 2Compliant
ISO 27001CompliantISO 42001Compliant
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