Security Advisory

CVE-2026-11326

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-05 00:12:32

Last updated 2026-06-05 18:32:50

Assigner OAI

CVSS score not scored

State PUBLISHED

Description

OpenAI Atlas before 1.2025.288.15 exposed privileged browser APIs to web content on *.openai.com origins. A cross-site scripting vulnerability in forum.openai.com could be used to access these functions, allowing access to browser history information and the ability to open or close tabs. OpenAI Atlas 1.2025.288.15 narrows access to these APIs to *.chatgpt.com; users should upgrade to 1.2025.288.15 or later.

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