GCD AI RADAR
incidents/AIR-2026-0541

CVE-2026-34450: Claude Python SDK Insecure File Permissions

Attack on AI2 Disclosed vulnerabilityInfrastructure vulnerability

The Claude SDK for Python created memory files with overly permissive file permissions, allowing local users or containers to read or modify agent state. Users should upgrade to the latest patched version.

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
Anthropic, Framework / tooling
products
Claude SDK for Python
incident date
1 Apr 2026
first reported
1 Apr 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-2026-34450 · insecure-permissions
record
created 2026-10-18 07:00Z · updated 2026-10-18 07:00Z · json

Sources · 1

  1. 2026-04-01
    CVE-2026-34450: Claude SDK for Python has Insecure Default File Permissions in Local Filesystem Memory Tool
    GitHub Advisory Database · github.com/advisories/GHSA-q5f5-3gjm-7mfm

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