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AgentForger allowed attackers to deploy malicious AI agents within corporate ChatGPT workspaces

Feeds.4Sysops •IT News • July 23, 2026

Researchers recently identified a vulnerability dubbed "AgentForger" that allowed attackers to deploy malicious, autonomous AI agents within corporate ChatGPT workspaces. By embedding specific instructions into a seemingly benign link, an attacker could trick a user into creating an assistant that inherits the victim's permissions. Once active, this agent could operate across connected business applications like Slack, Outlook, and Google Drive without further user interaction. Source

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

AgentForger: New Phishing Attack Creates Autonomous AI Insiders Zenity Labs has identified a critical vulnerability named AgentForger in OpenAI's ChatGPT Workspace Agents. This flaw allows attackers to create a malicious AI agent within an organization by embedding instructions in a phishing link. Once activated, the agent operates autonomously, inheriting the victim's permissions and accessing connected applications like Outlook, Slack, and Google Drive. The attack requires only one click from a logged-in user, enabling the agent to perform tasks such as data exfiltration and impersonation without further interaction. OpenAI resolved the vulnerability four days after it was disclosed, but organizations remained exposed until the fix was implemented. This incident highlights a new class of AI security risks where attackers can forge insiders rather than relying on traditional malware. The vulnerability underscores the need for enhanced security measures in AI agent deployment. 11 sources 70

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AgentForger allowed attackers to deploy malicious AI agents within corporate ChatGPT workspaces

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Extracted Entities

Attack Types (2)

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MITRE ATT&CK (1)

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Tools (1)

Vulnerabilities (1)