CVE-2026-59152: Improper Limitation of a Pathname to a Restricted Directory

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-2026-45134 LangSmith Client SDK: Public prompt pull deserializes untrusted manifests without trust boundary warning

LangSmith Client SDKs provide SDK's for interacting with the LangSmith platform. Prior to LangSmith SDK Python 0.8.0 and JS/TS 0.6.0, the LangSmith SDK's prompt pull methods pullprompt / pullpromptcommit in Python, pullPrompt / pullPromptCommit in JS/TS fetch and deserialize prompt manifests from...

CVE-2026-41182: Exposure of Sensitive Information to an Unauthorized Actor

LangSmith Client SDKs provide SDK's for interacting with the LangSmith platform. Prior to version 0.5.19 of the JavaScript SDK and version 0.7.31 of the Python SDK, the LangSmith SDK's output redaction controls hideOutputs in JS, hideoutputs in Python do not apply to streaming token events. When ...

CVE-2026-40190 LangSmith Client SDKs has Prototype Pollution in langsmith-sdk via Incomplete `__proto__` Guard in Internal lodash `set()`

LangSmith Client SDKs provide SDK's for interacting with the LangSmith platform. Prior to 0.5.18, the LangSmith JavaScript/TypeScript SDK langsmith contains an incomplete prototype pollution fix in its internally vendored lodash set utility. The baseAssignValue function only guards against the...

CVE-2026-40190

The CVE-2026-40190 issue affects LangSmith JavaScript/TypeScript SDK (langsmith) prior to 0.5.18, where an incomplete prototype pollution fix in the vendored lodash set() allows traversal via constructor.prototype, enabling an attacker who controls data keys processed by createAnonymizer() to pol...

LangSmith Client SDKs 安全漏洞

LangSmith Client SDKs are a developer toolkit open-sourced by LangChain. Versions of LangSmith Client SDKs prior to 0.5.18 contained security vulnerabilities. These vulnerabilities stemmed from incomplete prototype pollution repairs in the lodash set utility provided internally within the LangSmi...

GHSA-V34V-RQ6J-CJ6P LangSmith Client SDK Affected by Server-Side Request Forgery via Tracing Header Injection

Summary The LangSmith SDK's distributed tracing feature is vulnerable to Server-Side Request Forgery via malicious HTTP headers. An attacker can inject arbitrary apiurl values through the baggage header, causing the SDK to exfiltrate sensitive trace data to attacker-controlled endpoints. ---...

CVE-2026-25528 LangSmith Client SDK Affected by Server-Side Request Forgery via Tracing Header Injection

LangSmith Client SDKs provide SDK's for interacting with the LangSmith platform. The LangSmith SDK's distributed tracing feature is vulnerable to Server-Side Request Forgery via malicious HTTP headers. An attacker can inject arbitrary apiurl values through the baggage header, causing the SDK to...

CVE-2026-25528: Server-Side Request Forgery (SSRF)

LangSmith Client SDKs provide SDK's for interacting with the LangSmith platform. The LangSmith SDK's distributed tracing feature is vulnerable to Server-Side Request Forgery via malicious HTTP headers. An attacker can inject arbitrary apiurl values through the baggage header, causing the SDK to...