# CVE-2026-11326

> CVE-2026-11326. CVSS 6.0 (CVSS 4.0).

Canonical: https://rewindex.com/cve/CVE-2026-11326
Last updated: 2026-07-23T07:10:00Z

- Published: 2026-06-05 00:12 UTC · Updated: 2026-07-23 07:10 UTC · Assigner: OAI
- CVSS: 6.0 (CVSS 4.0) · Severity: Medium
- EPSS: 0.21%, 12th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-284

## 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.

## Affected vendors and products

- OpenAI: OpenAI Atlas

## Tracked companies

- [OpenAI](https://rewindex.com/company/openai.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-11326)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-11326)
- [https://www.hacktron.ai/blog/hacking-openai-atlas-browser](https://www.hacktron.ai/blog/hacking-openai-atlas-browser)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-11326 · Markdown: https://rewindex.com/cve/CVE-2026-11326.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-11326 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:11:46.182Z