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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-11326 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  OAI
CVSS-B 6.0 MEDIUM
Vector:  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

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://www.hacktron.ai/blog/hacking-openai-atlas-browser OAI

Weakness Enumeration

CWE-ID CWE Name Source
CWE-284 Improper Access Control OAI  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-11326
NVD Published Date:
06/04/2026
NVD Last Modified:
06/05/2026
Source:
OAI