GCD AI RADAR
incidents/AIR-2026-0522

CVE-2026-34070: LangChain Core Has Path Traversal Vulnerabilities in load_prompt

Attack on AI2 Disclosed vulnerabilityInfrastructure vulnerability

Path traversal vulnerabilities in legacy LangChain Core load_prompt functions allow reading arbitrary files. Applications passing user-influenced prompt configurations risk host file system exposure.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

Details

type
Attack on AI
An AI model, agent or AI-powered product was the thing exploited, abused or leaked.
categories
  • Infrastructure vulnerability
    CVEs and advisories in AI frameworks, inference servers, MCP servers, AI developer tools and hosting stacks.
owasp llm top 10
mitre atlas
no technique for these categories
Both rows are derived from the type and categories (OWASP 2025 edition, ATLAS release 2026.09), not classified per record. How
severity
2 · Disclosed vulnerability
CVE or vendor advisory, patched or patchable, no confirmed exploitation.
targets
Framework / tooling
products
LangChain, langchain_core
incident date
27 Mar 2026
first reported
27 Mar 2026
origin
GitHub Advisory Database
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
classifier confidence
0.95 · published at or above 0.80; see the methodology
tags
CVE-2026-34070 · path-traversal
record
created 2026-10-18 07:00Z · updated 2026-10-18 10:04Z · json

Sources · 2

  1. 2026-03-27
    CVE-2026-34070: LangChain Core has Path Traversal vulnerabilites in legacy `load_prompt` functions
    GitHub Advisory Database · github.com/advisories/GHSA-qh6h-p6c9-ff54
  2. 2026-03-31
    CVE-2026-34070: LangChain is a framework for building agents and LLM-powered applications.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-34070

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