GCD AI RADAR
incidents/AIR-2026-0463

CVE-2026-25725: Claude Code Sandbox Escape via Settings Injection

Attack on AI2 Disclosed vulnerabilityInfrastructure vulnerability

A sandbox escape flaw in Claude Code allowed malicious code to create and inject persistent hooks into settings.json when it was missing at startup. Standard auto-update users received the fix automatically.

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
6 Feb 2026
first reported
6 Feb 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-2026-25725 · sandbox-escape · configuration-injection
record
created 2026-10-18 07:00Z · updated 2026-10-18 10:04Z · json

Sources · 2

  1. 2026-02-06
    CVE-2026-25725: Claude Code has Sandbox Escape via Persistent Configuration Injection in settings.json
    GitHub Advisory Database · github.com/advisories/GHSA-ff64-7w26-62rf
  2. 2026-02-06
    CVE-2026-25725: Claude Code is an agentic coding tool.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-25725

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