GCD AI RADAR
incidents/AIR-2026-0790

CVE-2026-46406: Anthropic Claude Code Insecure Temporary File Handling in Copy Command

Attack on AI2 Disclosed vulnerabilityInfrastructure vulnerability

The Claude Code copy command creates responses at a predictable path without proper protections, enabling local response disclosure. Attackers can also use symlink attacks to overwrite local files.

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 Code
incident date
25 Jun 2026
first reported
25 Jun 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-2026-46406 · claude-code · anthropic
record
created 2026-10-18 07:00Z · updated 2026-10-18 10:04Z · json

Sources · 2

  1. 2026-06-25
    CVE-2026-46406: @anthropic-ai/claude-code has an Insecure Temporary File in /copy Command that Enables Response Disclosure and Symlink-Based File Write
    GitHub Advisory Database · github.com/advisories/GHSA-4vp2-6q8c-pvq2
  2. 2026-06-29
    CVE-2026-46406: Claude Code is an agentic coding tool.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-46406

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