Case study: Securing AI application supply chains

The rapid adoption of AI applications, including agents, orchestrators, and autonomous workflows, represents a significant shift in how software systems are built and operated. Unlike traditional applications, these systems are active participants in execution. They make decisions, invoke tools,...

Serialization Injection Vulnerability

LangChain is vulnerable to a Serialization Injection Vulnerability. The vulnerability is due to improper handling of user-controlled objects containing lc keys in the toJSON serialization logic, which allows an attacker to inject crafted data that is mistakenly treated as a trusted LangChain obje...

Serialization Injection Vulnerability

langchaincore is vulnerable to a Serialization Injection Vulnerability. The vulnerability is due to the dumps and dumpd functions not escaping user-controlled dictionaries containing the internal lc key, which allows an attacker to craft malicious input that is interpreted as a trusted LangChain...

CVE-2025-68664 vulnerabilities

Vulnerabilities for packages: py3-langchain...

GHSA-C67J-W6G6-Q2CM vulnerabilities

Vulnerabilities for packages: py3-langchain...

GHSA-C67J-W6G6-Q2CM vulnerabilities

Vulnerabilities for packages: py3-langchain...

CVE-2025-68664 vulnerabilities

Vulnerabilities for packages: py3-langchain...

Arbitrary File Upload

@n8n/n8n-nodes-langchain is vulnerable to Arbitrary File Upload. The vulnerability is due to improper validation and handling of uploaded files in the Chat Trigger component, which allows an attacker to upload a crafted HTML file and execute arbitrary code on the affected system...

CVE-2024-58340

LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.parse method libs/langchain/langchain/agents/mrkl/outputparser.py. The parser applies a backtracking-prone regular expression when extracting tool actions from...

PYSEC-2026-75

LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.parse method libs/langchain/langchain/agents/mrkl/outputparser.py. The parser applies a backtracking-prone regular expression when extracting tool actions from...

CVE-2024-58340

LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.parse method libs/langchain/langchain/agents/mrkl/outputparser.py. The parser applies a backtracking-prone regular expression when extracting tool actions from...

PYSEC-2026-75

LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.parse method libs/langchain/langchain/agents/mrkl/outputparser.py. The parser applies a backtracking-prone regular expression when extracting tool actions from...

CVE-2024-58340 LangChain <= 0.3.1 MRKLOutputParser ReDoS

LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.parse method libs/langchain/langchain/agents/mrkl/outputparser.py. The parser applies a backtracking-prone regular expression when extracting tool actions from...

CVE-2024-58340 LangChain <= 0.3.1 MRKLOutputParser ReDoS

LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.parse method libs/langchain/langchain/agents/mrkl/outputparser.py. The parser applies a backtracking-prone regular expression when extracting tool actions from...

CVE-2024-58340 LangChain <= 0.3.1 MRKLOutputParser ReDoS

LangChain versions up to and including 0.3.1 contain a regular expression denial-of-service ReDoS vulnerability in the MRKLOutputParser.parse method libs/langchain/langchain/agents/mrkl/outputparser.py. The parser applies a backtracking-prone regular expression when extracting tool actions from...

CVE-2024-58340

LangChain

LangChain 安全漏洞

LangChain is the LangChain open source framework for developing applications powered by the Large Language Model LLM. A security vulnerability exists in LangChain 0.3.1 and earlier versions, which stems from the MRKLOutputParser.parse method using a regular expression that is vulnerable to...

PT-2026-2319

Name of the Vulnerable Software and Affected Versions LangChain versions up to and including 0.3.1 Description LangChain versions up to and including 0.3.1 have a regular expression denial-of-service ReDoS issue in the MRKLOutputParser.parse method, located in...

Improper Validation of Specified Type of Input

Overview @n8n/n8n-nodes-langchain is a Affected versions of this package are vulnerable to Improper Validation of Specified Type of Input that is passed to the handleFormData function. An attacker can gain unauthorized access to files on the underlying server by requests with unexpected...

CVE-2024-2057

A vulnerability was found in LangChain langchaincommunity 0.0.26. It has been classified as critical. Affected is the function loadlocal in the library libs/community/langchaincommunity/retrievers/tfidf.py of the component TFIDFRetriever. The manipulation leads to server-side request forgery. It ...