CVE-2026-9831
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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.3
- CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
- EPSS probability
- 0.17%
- CWE
- CWE-362, CWE-488
- Published
- 2026-05-29
- Last modified
- 2026-06-01
Affected products
- Extreme Networks Extreme Platform ONE
- Extreme Networks Extreme Platform ONE
Weakness type
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