Race condition in Extreme Platform ONE - CVE-2026-9831
Published: June 1, 2026
Vulnerability identifier: #VU133118
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-9831
CWE-ID: CWE-362
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Extreme Networks
Affected software:
Extreme Platform ONE
Extreme Platform ONE
Detailed vulnerability description
The vulnerability allows a remote user to disclose sensitive information across tenants.
The vulnerability exists due to a race condition in the shared Extreme Platform ONE IAM Gateway API-key authentication path when handling high-concurrency requests to affected API endpoints. A remote user can send concurrent requests authenticated with an IAM-issued API key to disclose sensitive information across tenants.
XIQ-native tokens and standard OAuth/Bearer JWT authentication are not affected.
How to mitigate CVE-2026-9831
Install security update from vendor's website.