{"cve":"CVE-2026-9831","nvd":{"published":"2026-05-29T22:16:23.980","modified":"2026-07-22T06:10:00.170","status":"Awaiting Analysis","description":"A race condition in the shared Extreme Platform\nONE IAM Gateway API-key authentication path could, under specific\nhigh-concurrency traffic conditions, intermittently allow requests\nauthenticated with an Extreme Platform ONE /IAM-issued API key to receive\nresponse data for another tenant. The issue was observed through ExtremeCloud\nIQ/XIQ API endpoints and validated against both XIQ/XAPI and Extreme Platform ONE\n/Common Services API paths. XIQ-native tokens and standard OAuth/Bearer JWT\nauthentication were not affected.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N","score":6.3},"cwes":["CWE-362","CWE-488"],"references":["https://community.extremenetworks.com/t5/security-advisories-formerly/sa-2026-048-extremecloud-iq-cross-tenant-data-exposure-via/ba-p/121851"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:37:48.043517290+00:00"},"epss":{"cve":"CVE-2026-9831","score":0.00172,"percentile":0.06616,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}