What’s Vulnerable › Vulnerabilities

CVE-2026-1201: Authorization Bypass Through User-Controlled Key in Hubitat Elevation Hubs

• Severity: critical (CVSS 9.4 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-22 · updated 2026-06-17
• Weakness: CWE-639

Description

An Authorization Bypass Through User-Controlled Key vulnerability in Hubitat Elevation home automation controllers prior to version 2.4.2.157 could allow a remote authenticated user to control connected devices outside of their authorized scope via client-side request manipulation.

Affected products

• Hubitat Elevation C3: before 2.4.2.157 — fixed in 2.4.2.157
• Hubitat Elevation C4: before 2.4.2.157 — fixed in 2.4.2.157
• Hubitat Elevation C5: before 2.4.2.157 — fixed in 2.4.2.157
• Hubitat Elevation C7: before 2.4.2.157 — fixed in 2.4.2.157
• Hubitat Elevation C8: before 2.4.2.157 — fixed in 2.4.2.157
• Hubitat Elevation C8 pro: before 2.4.2.157 — fixed in 2.4.2.157

How to fix

Upgrade to a fixed version: Hubitat Elevation C3 2.4.2.157; Hubitat Elevation C4 2.4.2.157; Hubitat Elevation C5 2.4.2.157; Hubitat Elevation C7 2.4.2.157; Hubitat Elevation C8 2.4.2.157; Hubitat Elevation C8 pro 2.4.2.157. Check the vendor advisory for mitigations.

References

• https://ostrichlab.io/research-blog/?post=hubitat_writeup
• https://www.cisa.gov/news-events/ics-advisories/icsa-26-022-06

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