CVE-2026-59152

A flaw was found in the LangSmith Client SDK's TracingMiddleware. An attacker can send an HTTP request to a server running the TracingMiddleware, causing it to read an arbitrary file from its local filesystem. The contents of this file are then uploaded to LangSmith as a trace attachment. This...

CVE-2026-59152

LangSmith Client SDKs provide SDK's for interacting with the LangSmith platform. Prior to 0.8.18, an attacker who can send an HTTP request to a server running the LangSmith SDK's TracingMiddleware can cause that server to read an arbitrary file from its local filesystem and upload the contents to...

CVE-2026-59152

The LangSmith Client SDKs’ TracingMiddleware had a vulnerability before version 0.8.18 where an HTTP request to a server running TracingMiddleware could trigger reading an arbitrary file from the server’s filesystem and uploading it to LangSmith as a trace attachment. This enables a trust-boundar...

PT-2026-55945

Name of the Vulnerable Software and Affected Versions LangSmith Client SDKs versions prior to 0.8.18 Description An issue exists in the TracingMiddleware where an attacker can send an HTTP request to a server to force the reading of an arbitrary file from the local filesystem. The contents of the...