CVE Watch19 oct 2026

CVE-2025-68664

LangChain is a framework for building agents and LLM-powered applications. Prior to versions 0.3.81 and 1.2.5, a serialization injection vul

CVSS

9.3

Crítico

EPSS

42.9%

p99

KEV

—

Exploit Today

0-100

Publicado: 23 dic 2025 · Última mod.: 19 oct 2026 · CWE-502

EPSS · 30d

42.9%EPSS · 30 días42.9%

2026-09-232026-10-20

Descripción técnica

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. The 'lc' key is used internally by LangChain to mark serialized objects. When user-controlled data contains this key structure, it is treated as a legitimate LangChain object during deserialization rather than plain user data. This issue has been patched in versions 0.3.81 and 1.2.5.

Referencias oficiales

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