What is GHSA-x355-jg5j-p4h6?

GHSA-x355-jg5j-p4h6 is a security advisory published by GitHub Security Advisories with Medium severity. OpenAI Atlas before 1.2025.288.15 exposed privileged browser APIs to web content on *.openai.com...

Which CVE IDs does GHSA-x355-jg5j-p4h6 cover?

GHSA-x355-jg5j-p4h6 covers the following CVE IDs: CVE-2026-11326. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-x355-jg5j-p4h6Medium

OpenAI Atlas before 1.2025.288.15 exposed privileged browser APIs to web content on *.openai.com...

Vendor

GitHub Security Advisories

Published

June 5, 2026

Last Modified

June 5, 2026

🔗 CVE IDs covered (1)

CVE-2026-11326 →

📋 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.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-11326
https://www.hacktron.ai/blog/hacking-openai-atlas-browser
https://github.com/advisories/GHSA-x355-jg5j-p4h6