medium6.0
CVE-2026-11326
OpenAI Atlas before 1.2025.288.15 exposed privileged browser APIs to web content on *.openai.com origins.
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| OpenAI Atlas | before 1.2025.288.15 |
Versions were read from the advisory text. No structured product data has been published for this record yet.