SecuriTricks - 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.

Product(s) Impacted

Vendor	Product	Versions
Openai	Atlas	<1.2025.288.15

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-284

Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	openai	atlas	<1.2025.288.15	/	/	/	/	/	/	/

References

https://www.hacktron.ai/blog/hacking-openai-atlas-browser

CVSS Score

6.0 / 10

CVSS Data - 4.0

Attack Vector: NETWORK
Attack Complexity: HIGH
Attack Requirements: NONE
Privileges Required: NONE
User Interaction: PASSIVE
Scope:
Confidentiality Impact: HIGH
Integrity Impact: NONE
Availability Impact: NONE
Exploit Maturity: NOT_DEFINED

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:N/R:X/V:D/RE:L/U:Green

View Vector String

Timeline

Published: June 5, 2026, 2:17 a.m.
Last Modified: June 5, 2026, 6:17 p.m.

Status : Deferred

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

8f4f43ab-ba69-4d92-aa1d-d772184d6fb7

CVE-2026-11326