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CVE-2026-11326

Quick assessment

Affected
OpenAI OpenAI Atlas
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenAI Atlas是美国OpenAI公司的一款将人工智能助手深度集成到浏览体验中的AI浏览器。 OpenAI Atlas 1.2025.288.15之前版本存在安全漏洞，该漏洞源于暴露特权浏览器API给*.openai.com来源的Web内容，可能导致跨站脚本攻击。

AI Predicted 7.5 Difficulty: Easy EPSS 0.21% · P11

Affected Version Matrix 1

VendorProduct Version RangeStatus
OpenAI OpenAI Atlas < 1.2025.288.15 affected
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I. Basic Information for CVE-2026-11326

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/AU:N/V:D/RE:L/U:Green
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
OpenAI Atlas 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenAI Atlas是美国OpenAI公司的一款将人工智能助手深度集成到浏览体验中的AI浏览器。 OpenAI Atlas 1.2025.288.15之前版本存在安全漏洞，该漏洞源于暴露特权浏览器API给*.openai.com来源的Web内容，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenAI OpenAI Atlas 0 ~ 1.2025.288.15 -

II. Public POCs for CVE-2026-11326

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III. Intelligence Information for CVE-2026-11326

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Security Blog Posts for CVE-2026-11326 (1)

IV. Related Vulnerabilities

Same vendor: OpenAI
Same weakness: CWE-284

V. Comments for CVE-2026-11326

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