Executive Summary
OpenAI fixed AgentForger, which let an attacker create, insert and remotely control an invisible autonomous agent inside a victim organization.
What Happened
AgentForger allows an attacker to create, insert and remotely control an invisible autonomous AI agent inside a victim organization. The post OpenAI Fixes ChatGPT Agent Flaw That Could Let Attackers Forge an AI Insider appeared first on SecurityWeek .
Affected Products
- OpenAI ChatGPT Workspace Agents
Vulnerability / Attack Technique
Rogue agent creation via phishing
Technical Mechanism
The flaw allowed an attacker to build and authorize an agent in the victim's workspace that they could control.
AI Security Category
LLM06:2025 Excessive Agency
Part of the AI Agent Excessive Agency topic.
Relevant Frameworks
RealGround Analysis
An invisible agent is an insider. RealGround analysis: workspace agent inventories should be reviewed like user accounts.
Recommended Controls
- Audit workspace agents regularly
Related RealGround Service
Secure AI Agent Build · or start with the free AI Agent Security Scanner.
Sources
securityweek.com: https://www.securityweek.com/openai-fixes-chatgpt-agent-flaw-that-could-let-attackers-forge-an-ai-insider/
Summary and analysis written by RealGround from the source above; last updated 2026-10-18.