PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-50090 Aqara CVE debrief

CVE-2026-50090 is a critical vulnerability in the Aqara Cloud OAuth Authorization Endpoint (open-cn.aqara.com/oauth/authorize). The vulnerability is caused by lax controls on domain matching, which is an instance of CWE-1289: Improper Validation of Unsafe Equivalence in Input. The estimated CVSS score is 9.3 (Critical).

Vendor
Aqara
Product
Cloud OAuth Authorization Endpoint
CVSS
CRITICAL 9.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-12
Original CVE updated
2026-07-09
Advisory published
2026-06-12
Advisory updated
2026-07-09

Who should care

Users of the Aqara Cloud OAuth Authorization Endpoint are advised to take immediate action to mitigate this vulnerability.

Technical summary

The Aqara Cloud OAuth Authorization Endpoint is vulnerable to a redirect bypass due to lax controls on domain matching. This is an instance of CWE-1289: Improper Validation of Unsafe Equivalence in Input. The CVSS score is 9.3 (Critical) with the following vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N.

Defensive priority

High

Recommended defensive actions

  • Apply patches or updates provided by the vendor to fix the vulnerability.
  • Implement additional security measures to detect and prevent exploitation attempts.

Evidence notes

The vulnerability was reported by Runzero and has been documented on GitHub.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50090 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50090

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-50090 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50090

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://github.com/xn0tsa/theres-no-place-like-home

    44488dab-36db-4358-99f9-bc116477f914

  • Source reference

    Unverified legacy reference

    URL: https://www.runzero.com/advisories/aqara-oauth-redirect-validation-bypass-cve-2026-50090

    44488dab-36db-4358-99f9-bc116477f914

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.