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This vulnerability exposes a critical flaw in ChatGPT's sandbox isolation, allowing attackers to hijack sessions and exfiltrate data from connected applications like Gmail via a shared internal artifact repository. The incident highlights how improper metadata handling in dependency management services can create covert cross-account communication channels that bypass intended security boundaries. For AI safety and infrastructure teams, this underscores the necessity of strict network segmentation and permission scoping within code-execution environments to prevent lateral movement between isolated tenants.

Sources coveringCybersecurity News, LessWrong, Fortune

What this isA model's reading of the article and related coverage, written for aiqbench. Not the publisher's words.

ChatGPT Sandbox Flaw Lets Attackers Steal Gmail Data Across Accounts via Hidden Channel

Cybersecurity NewsSeptember 8, 20264 min read

A covert cross-account communication channel inside ChatGPT let an attacker hijack a victim’s session and silently exfiltrate data from connected apps like Gmail, all while the victim saw nothing unusual in their conversation. The vulnerability exploited ChatGPT’s code-execution containers, isolated sandboxes the assistant uses when a task requires running code or installing software packages. These […] The post ChatGPT Sandbox Flaw Lets Attackers Steal Gmail Data Across Accounts via Hidden Channel appeared first on Cyber Security News.

A covert cross-account communication channel inside ChatGPT let an attacker hijack a victim’s session and silently exfiltrate data from connected apps like Gmail, all while the victim saw nothing unusual in their conversation. The vulnerability exploited ChatGPT’s code-execution containers, isolated sandboxes the assistant uses when a task requires running code or installing software packages. These containers cannot reach the public internet directly and are not supposed to talk to containers spun up under different accounts. However, Check Point researchers found that containers…

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