CVE-2025-68665 LangChain serialization injection vulnerability enables secret extraction

LangChain is a framework for building LLM-powered applications. Prior to @langchain/core versions 0.3.80 and 1.1.8, and prior to langchain versions 0.3.37 and 1.2.3, a serialization injection vulnerability exists in LangChain JS's toJSON method and subsequently when string-ifying objects using...

CVE-2025-68665 LangChain serialization injection vulnerability enables secret extraction

LangChain is a framework for building LLM-powered applications. Prior to @langchain/core versions 0.3.80 and 1.1.8, and prior to langchain versions 0.3.37 and 1.2.3, a serialization injection vulnerability exists in LangChain JS's toJSON method and subsequently when string-ifying objects using...

CVE-2025-68665 LangChain serialization injection vulnerability enables secret extraction

LangChain is a framework for building LLM-powered applications. Prior to @langchain/core versions 0.3.80 and 1.1.8, and prior to langchain versions 0.3.37 and 1.2.3, a serialization injection vulnerability exists in LangChain JS's toJSON method and subsequently when string-ifying objects using...

CVE-2025-68665

CVE-2025-68665 (LangChain JS) has a serialization-injection vulnerability in LangChain JS toJSON() and JSON.stringify() paths that fails to escape objects with the internal 'lc' key, causing user-controlled data to be mistaken for LangChain objects during deserialization. Affected: LangChain JS b...

CVE-2025-68664 LangChain serialization injection vulnerability enables secret extraction in dumps/loads APIs

LangChain is a framework for building agents and LLM-powered applications. Prior to versions 0.3.81 and 1.2.5, a serialization injection vulnerability exists in LangChain's dumps and dumpd functions. The functions do not escape dictionaries with 'lc' keys when serializing free-form dictionaries...

CVE-2025-68664

CVE-2025-68664 (LangGrinch) is a serialization-injection vulnerability in the LangChain Core Python package. Affected versions prior to 0.3.81 and 1.2.5 fail to escape dictionaries containing the internal lc marker during dumps/dumpd, causing user-controlled data to be treated as legitimate LangC...

CVE-2025-68664 LangChain serialization injection vulnerability enables secret extraction in dumps/loads APIs

LangChain is a framework for building agents and LLM-powered applications. Prior to versions 0.3.81 and 1.2.5, a serialization injection vulnerability exists in LangChain's dumps and dumpd functions. The functions do not escape dictionaries with 'lc' keys when serializing free-form dictionaries...

CVE-2025-68664 LangChain serialization injection vulnerability enables secret extraction in dumps/loads APIs

LangChain is a framework for building agents and LLM-powered applications. Prior to versions 0.3.81 and 1.2.5, a serialization injection vulnerability exists in LangChain's dumps and dumpd functions. The functions do not escape dictionaries with 'lc' keys when serializing free-form dictionaries...

@acabai/android (>=1.0.0 <=2.0.6), @acabai/core (>=1.0.0 <=1.0.6) +926 more potentially affected by CVE-2025-68665 via @langchain/core (>=0.0.0 <=0.3.8)

@langchain/core NPM version =0.0.0, =1.0.0, =1.0.0, =1.0.0, =1.0.0, =0.0.1, =0.0.6, =1.0.5, =0.1.2, =0.0.1, =1.2.27, =0.1.7, =3.0.0-beta.65.0, =8.0.0, =10.0.0, =11.0.0 and more Source cves: CVE-2025-68665 Source advisory: OSV:GHSA-R399-636X-V7F6...

@alvedder/deepagents (>=1.8.1-alvedder.0 <=1.8.3-alvedder.0), @axiom-lattice/agent-eval (>=2.1.9 <=2.1.70) +38 more potentially affected by CVE-2025-68665 via langchain (>=1.0.2 <=1.2.27)

langchain NPM version =1.0.2, =1.8.1-alvedder.0, =2.1.9, =2.1.0, =1.0.11, =2.1.0, =1.0.1, =1.0.0, =1.0.0, =0.1.3, =3.66.0, =3.66.0, =1.0.0, =0.1.0, =5.7.2, =5.9.1 and more Source cves: CVE-2025-68665 Source advisory: OSV:GHSA-R399-636X-V7F6...

10minions-engine (>=0.0.1 <=0.0.4), @0xd541ecb3/byte-babe (>=1.0.0 <=1.2.1) +717 more potentially affected by CVE-2025-68665 via langchain (>=0.0.100 <=0.3.35)

langchain NPM version =0.0.100, =0.0.1, =1.0.0, =0.0.1, =0.0.6, =0.1.4, =3.0.0-beta.65.0, =0.0.11, =0.0.0, =0.0.2-alpha, =0.0.33-alpha2, =3.114.0, =1.0.0, =0.1.0, =0.2.0 and more Source cves: CVE-2025-68665 Source advisory: OSV:GHSA-R399-636X-V7F6...

EUVD-2025-204846

LangChain serialization injection vulnerability enables secret extraction...

0pflow (>=0.1.0-dev.0de2bc6 <=0.1.0-dev.f5622ac), @0xgasless/agent-sdk (>=0.1.1 <=0.1.2) +1359 more potentially affected by CVE-2025-68665 via @langchain/core (>=1.0.1 <=1.1.8-dev-1766775128110)

@langchain/core NPM version =1.0.1, =0.1.0-dev.0de2bc6, =0.1.1, =1.0.0, =0.1.0, =2.0.0, =0.0.1, =1.0.0, =0.0.1, =0.0.1, =1.0.0, =1.0.0, =1.51.1 and more Source cves: CVE-2025-68665 Source advisory: OSV:GHSA-R399-636X-V7F6...

GHSA-R399-636X-V7F6 LangChain serialization injection vulnerability enables secret extraction

Context A serialization injection vulnerability exists in LangChain JS's toJSON method and subsequently when string-ifying objects using JSON.stringify. The method did not escape objects with 'lc' keys when serializing free-form data in kwargs. The 'lc' key is used internally by LangChain to mark...

LangChain serialization injection vulnerability enables secret extraction

Context A serialization injection vulnerability exists in LangChain JS's toJSON method and subsequently when string-ifying objects using JSON.stringify. The method did not escape objects with 'lc' keys when serializing free-form data in kwargs. The 'lc' key is used internally by LangChain to mark...

accessiqlue (=2025.12.21154255), agent-builder (>=0.0.2 <=0.1.7) +335 more potentially affected by CVE-2025-68664 via langchain-core (>=1.0.0 <=1.2.4)

langchain-core PYPI version =1.0.0, =0.0.2, =0.1.0, =0.1.0, =0.1.1 - ai-benchmark-analyzer =2025.12.21193050 - ai-claim-essence =2025.12.20202921 - ai-design-insights =2025.12.21145447 - ai-mysql-translator =2025.12.21101721 - ai-reliability-analyzer =2025.12.21171415 - ai-risk-extractor...

a-data-processing (=0.0.1), a-mailx (=0.1.0) +1224 more potentially affected by CVE-2025-68664 via langchain-core (>=0.0.1 <=0.3.8)

langchain-core PYPI version =0.0.1, =0.1.0, =0.1.3, =0.1.0b0, =4.8.2, =0.1.3, =0.1.0, =3.2.0, =2.1.7, =0.0.2, =0.0.5 and more Source cves: CVE-2025-68664 Source advisory: OSV:GHSA-C67J-W6G6-Q2CM...

EUVD-2025-204849

LangChain serialization injection vulnerability enables secret extraction in dumps/loads APIs...

GHSA-C67J-W6G6-Q2CM LangChain serialization injection vulnerability enables secret extraction in dumps/loads APIs

Summary A serialization injection vulnerability exists in LangChain's dumps and dumpd functions. The functions do not escape dictionaries with 'lc' keys when serializing free-form dictionaries. The 'lc' key is used internally by LangChain to mark serialized objects. When user-controlled data...

LangChain serialization injection vulnerability enables secret extraction in dumps/loads APIs

Summary A serialization injection vulnerability exists in LangChain's dumps and dumpd functions. The functions do not escape dictionaries with 'lc' keys when serializing free-form dictionaries. The 'lc' key is used internally by LangChain to mark serialized objects. When user-controlled data...