Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-07-06T14:26:55 langsmith: LangSmith SDK TracingMiddleware: Information Disclosure via Arbitrary Server-Side File Read 5.0 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

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 LangSmith as a trace attachment. Depending on how the distributed trace system is deployed, triggering a read may not require authentication. Retrieving the contents requires read access to the LangSmith workspace the traces are sent to. The net effect is a trust-boundary crossing: a party with workspace trace-read access (for example a low-privilege workspace member, a contractor, or a compromised teammate account) gains the ability to read files from any server running TracingMiddleware, a capability outside that workspace's intended trust boundary. This vulnerability is fixed in 0.8.18.

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 vulnerability allows a party with trace-read access to the LangSmith workspace to read files from any server utilizing TracingMiddleware, leading to unauthorized information disclosure.

This Moderate-impact information disclosure flaw in LangSmith Client SDK's TracingMiddleware allows an authenticated attacker with trace-read access to a LangSmith workspace to read arbitrary files from a server running the middleware. This represents a trust-boundary crossing, enabling unauthorized access to local filesystem data on affected systems where the TracingMiddleware is exposed via HTTP. Exploit Intelligence Out of support scope exploit-intelligence-tech-preview/vulnerability-analysis-rhel9 Migration Toolkit for Applications 8 Fix deferred mta/mta-solution-server-rhel9 OpenShift Lightspeed Fix deferred openshift-lightspeed/lightspeed-service-api-rhel9 Red Hat Ansible Automation Platform 2 Out of support scope ansible-automation-platform-24/lightspeed-rhel8 Red Hat Ansible Automation Platform 2 Out of support scope ansible-automation-platform-25/lightspeed-chatbot-rhel8 Red Hat Ansible Automation Platform 2 Out of support scope ansible-automation-platform-25/lightspeed-rhel8 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/bootc-cuda-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/bootc-gaudi-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/bootc-rocm-rhel9 Red Hat Enterprise Linux AI (RHEL AI) 3 Fix deferred rhelai3/disk-image-cuda-rhel9 Red Hat OpenShift AI (RHOAI) Fix deferred rhoai/odh-autorag-rhel9 Red Hat OpenShift AI (RHOAI) Fix deferred rhoai/odh-llama-stack-core-rhel9 Red Hat OpenShift AI (RHOAI) Fix deferred rhoai/odh-trustyai-garak-lls-provider-dsp-rhel9 Red Hat OpenShift AI (RHOAI) Fix deferred rhoai/odh-trustyai-nemo-guardrails-server-rhel9 https://www.cve.org/CVERecord?id=CVE-2026-59152 https://nvd.nist.gov/vuln/detail/CVE-2026-59152 https://github.com/langchain-ai/langsmith-sdk/security/advisories/GHSA-f4xh-w4cj-qxq8