CVE-2026-40087

LangChain is a framework for building agents and LLM-powered applications. Prior to 0.3.84 and 1.2.28, LangChain's f-string prompt-template validation was incomplete in two respects. First, some prompt template classes accepted f-string templates and formatted them without enforcing the same...

CVE-2026-40087 LangChain has incomplete f-string validation in prompt templates

LangChain is a framework for building agents and LLM-powered applications. Prior to 0.3.84 and 1.2.28, LangChain's f-string prompt-template validation was incomplete in two respects. First, some prompt template classes accepted f-string templates and formatted them without enforcing the same...

CVE-2026-40087 LangChain has incomplete f-string validation in prompt templates

LangChain is a framework for building agents and LLM-powered applications. Prior to 0.3.84 and 1.2.28, LangChain's f-string prompt-template validation was incomplete in two respects. First, some prompt template classes accepted f-string templates and formatted them without enforcing the same...

CVE-2026-40087 LangChain has incomplete f-string validation in prompt templates

LangChain is a framework for building agents and LLM-powered applications. Prior to 0.3.84 and 1.2.28, LangChain's f-string prompt-template validation was incomplete in two respects. First, some prompt template classes accepted f-string templates and formatted them without enforcing the same...

CVE-2026-40087

LangChain CVE-2026-40087 affects the f-string prompt-template validation prior to versions 0.3.84 and 1.2.28. The vulnerability arises because DictPromptTemplate and ImagePromptTemplate could accept templates containing attribute access or indexing expressions and evaluate them during formatting,...

Security Bulletin: Multiple Vulnerabilities in IBM watsonx Code Assistant On Prem

Summary Multiple vulnerabilities were addressed in IBM watsonx Code Assistant On Prem V5.3.1 Patch 1 Vulnerability Details CVEID:CVE-2024-58340 DESCRIPTION: LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.pars...

LangChain 安全漏洞

LangChain is an open-source framework developed by LangChain for creating applications powered by large language models LLMs. Versions of LangChain prior to 0.3.84 and 1.2.28 contained security vulnerabilities. These vulnerabilities stemmed from incomplete validation of f-string template fields,...

Security Bulletin: LangChain Serialization Injection Vulnerability in dumps()/dumpd() (Fixed in 0.3.81 / 1.2.5) affects watsonx.data

Summary A serialization injection vulnerability in LangChain's dumps and dumpd functions pre-0.3.81 / 1.2.5 allows user-controlled data with 'lc' keys to be deserialized as objects. This issue is fixed in versions 0.3.81 and 1.2.5. This can affect watsonx.data. Vulnerability Details...

PT-2026-31716

Name of the Vulnerable Software and Affected Versions LangChain versions prior to 0.3.84 and prior to 1.2.28 Description LangChain's f-string prompt-template validation was incomplete, allowing attribute access and indexing expressions in templates for DictPromptTemplate and ImagePromptTemplate...

PT-2026-30458

Name of the Vulnerable Software and Affected Versions Dompdf affected versions not specified Description Dompdf is subject to a File Existence Oracle attack via the manipulation of the CSS @font-face directive. By submitting malicious HTML that repeatedly references local files using the file://...

LangChain Core < 1.2.22 Path Traversal (GHSA-qh6h-p6c9-ff54)

The version of LangChain Core installed on the remote host is prior to 1.2.22. It is, therefore, affected by a path traversal vulnerability: - Multiple functions in langchaincore.prompts.loading read files from paths embedded in deserialized config dicts without validating against directory...

SQL Injection

Overview @langchain/google-cloud-sql-pg is a LangChain.js integrations for Google Cloud SQL for PostgreSQL Affected versions of this package are vulnerable to SQL Injection via the PostgresChatMessageHistory.initialize method due to the improper parameters validation before incorporating them int...

CVE-2026-34070

A flaw was found in LangChain. Multiple functions in langchaincore.prompts.loading read files from paths embedded in deserialized configuration dictionaries without validation for directory traversal or absolute path injection. When an application passes user-influenced prompt configurations to...

CVE-2026-34070

LangChain is a framework for building agents and LLM-powered applications. Prior to version 1.2.22, multiple functions in langchaincore.prompts.loading read files from paths embedded in deserialized config dicts without validating against directory traversal or absolute path injection. When an...

PYSEC-2026-2193

LangChain is a framework for building agents and LLM-powered applications. Prior to version 1.2.22, multiple functions in langchaincore.prompts.loading read files from paths embedded in deserialized config dicts without validating against directory traversal or absolute path injection. When an...

CVE-2026-34070

LangChain is a framework for building agents and LLM-powered applications. Prior to version 1.2.22, multiple functions in langchaincore.prompts.loading read files from paths embedded in deserialized config dicts without validating against directory traversal or absolute path injection. When an...

CVE-2026-34070 LangChain Core has Path Traversal vulnerabilites in legacy `load_prompt` functions

LangChain is a framework for building agents and LLM-powered applications. Prior to version 1.2.22, multiple functions in langchaincore.prompts.loading read files from paths embedded in deserialized config dicts without validating against directory traversal or absolute path injection. When an...

CVE-2026-34070 LangChain Core has Path Traversal vulnerabilites in legacy `load_prompt` functions

LangChain is a framework for building agents and LLM-powered applications. Prior to version 1.2.22, multiple functions in langchaincore.prompts.loading read files from paths embedded in deserialized config dicts without validating against directory traversal or absolute path injection. When an...

CVE-2026-34070

CVE-2026-34070 affects LangChain Core prior to 1.2.22, where multiple functions in langchain_core.prompts.loading read files from paths embedded in deserialized config dicts without validating against directory traversal or absolute path injections. An attacker could read arbitrary host files whe...

CVE-2026-34070 LangChain Core has Path Traversal vulnerabilites in legacy `load_prompt` functions

LangChain is a framework for building agents and LLM-powered applications. Prior to version 1.2.22, multiple functions in langchaincore.prompts.loading read files from paths embedded in deserialized config dicts without validating against directory traversal or absolute path injection. When an...