CVE-2026-9831

Description

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.

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Produits concernés

• Extreme Networks Extreme Platform ONE

Scores CVSS

Faiblesses (CWE)

• CWE-362
• CWE-488

Références

• https://community.extremenetworks.com/t5/security-advisories-formerly/sa-2026-048-extremecloud-iq-cross-tenant-data-exposure-via/ba-p/121851

Ailleurs

• NVD
• CVE.org
• CIRCL Vulnerability-Lookup
• CERT-FR
• GitHub Advisories