CVE Catalog

CVE-2026-9831

MediumCVSS 6.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.17%

7th percentile - higher than 7% of all known CVEs

Summary

A race condition in the shared Extreme Platform ONE IAM Gateway API-key authentication path could, under high-concurrency traffic, intermittently allow requests authenticated with one tenant's 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.

Risk Assessment

The risk is potential cross-tenant data leakage, which could compromise customer data confidentiality and breach tenant isolation policies.

Recommendation

Immediately update Extreme Platform ONE to a patched version that fixes the race condition and implement monitoring of API traffic for anomalies.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS