CVE Catalog

CVE-2026-11326

MediumCVSS 6.0
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.21%

12th percentile - higher than 12% of all known CVEs

Summary

OpenAI Atlas before version 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 and the ability to open or close tabs.

Risk Assessment

An attacker could access sensitive browser data such as history and manipulate tabs, potentially leading to information disclosure or further attacks.

Recommendation

Upgrade OpenAI Atlas to version 1.2025.288.15 or later, which restricts API access to *.chatgpt.com only.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS