GCD AI RADAR
incidents/AIR-2026-0333

CVE-2026-96620: Claude Agent SDK Command Injection Vulnerability

Attack on AI2 Disclosed vulnerabilityInfrastructure vulnerability

A vulnerability in the Claude Agent SDK prior to version 0.2.121 allows arbitrary command execution when untrusted input is passed to the resume option, leading to MCP config injection. The issue has been patched in version 0.2.121.

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 Agent SDK, Claude Code
incident date
16 Oct 2026
first reported
16 Oct 2026
origin
NVD
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-2026-96620 · command-injection · mcp
record
created 2026-10-18 06:33Z · updated 2026-10-18 06:33Z · json

Sources · 1

  1. 2026-10-16
    CVE-2026-96620: Claude Agent SDK is a Python SDK for Claude Code.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-96620

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