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Threatist priority CRITICAL 0 HIGH 1 MEDIUM 1 LOW 0

Signals Exploited in the wild (KEV) 0 Patch available 2 No fix listed 0 Has CVE 2

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Attack vector Network 2 Adjacent network 0 Local 0 Physical 0

Requirements No authentication 2 No user interaction 1

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Weakness (CWE) CWE-1321 Improperly Controlled Modification of Object Prototype Attributes 1 CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component 1

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Vendor: langchain-ai × Component: Langsmith × Clear all filters

TI-2026-29004 CVE-2026-40190 · GHSA-fw9q-39r9-c252

Prototype pollution in langchain-ai langsmith-sdk

Priority HIGH 75

LangSmith Client SDKs provide SDK's for interacting with the LangSmith platform.

CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.00325 · Published 2026-04-10 · Fixed in 0.5.18 CWE-1321

TI-2026-20818 CVE-2026-25750

LangSmith Studio has URL Parameter Injection Vulnerability that Enables Token Theft via Malicious baseUrl

Priority MEDIUM 43

Langchain Helm Charts are Helm charts for deploying Langchain applications on Kubernetes.

CVSS 4.0HIGH 8.5· Network · No auth · User interaction · EPSS 0.00348 · Published 2026-03-04 · Fixed in 0.12.71 CWE-74

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