PT-2026-44998 · Extreme Networks · Extreme Platform One

Sebastian Koller · Published 2026-05-29 · Updated 2026-05-29 · CVE-2026-9831

NVD

CVSS v3.1

6.3

Medium

Base vector

AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

A race condition in the shared Extreme Platform ONE IAM Gateway API-key authentication path could, under specific high-concurrency traffic conditions, intermittently allow requests authenticated with an Extreme Platform ONE /IAM-issued API key to receive response data for another tenant. The issue was observed through ExtremeCloud IQ/XIQ API endpoints and validated against both XIQ/XAPI and Extreme Platform ONE /Common Services API paths. XIQ-native tokens and standard OAuth/Bearer JWT authentication were not affected.

Fix

Race Condition

Weakness Enumeration

CWE-362

CWE-488

Related Identifiers

CVE-2026-9831

Affected Products

Extreme Platform One

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-9831 · Security Note
• https://community.extremenetworks.com/t5/security-advisories-formerly/sa-2026-048-extremecloud-iq-cross-tenant-data-exposure-via/ba-p/121851 · Vendor Advisory