Apache IoTDB up to 1.3.7/2.0.9 FastLastQuery /rest/v2/fastLastQuery authorization

Summaryinfo

A vulnerability was found in Apache IoTDB up to 1.3.7/2.0.9. It has been rated as problematic. Affected by this issue is some unknown functionality of the file /rest/v2/fastLastQuery of the component FastLastQuery Handler. Performing a manipulation results in authorization. This vulnerability was named CVE-2026-40452. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic has been found in Apache IoTDB up to 1.3.7/2.0.9. This affects an unknown function of the file /rest/v2/fastLastQuery of the component FastLastQuery Handler. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. This is going to have an impact on confidentiality. The summary by CVE is:

Incorrect Authorization, Improper Access Control vulnerability in Apache IoTDB. Authorization bypass in /rest/v2/fastLastQuery exposes last-value data to unauthorized authenticated users. This issue affects Apache IoTDB: from 1.3.5 before 1.3.8, from 2.0.5 before 2.0.10. Users are recommended to upgrade to version 2.0.10, which fixes the issue.

The advisory is shared at lists.apache.org. This vulnerability is uniquely identified as CVE-2026-40452 since 04/13/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/10/2026).

Upgrading to version 1.3.8 or 2.0.10 eliminates this vulnerability.

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Productinfo

Vendor

• Apache

Name

• IoTDB

Version

• 1.3.0
• 1.3.1
• 1.3.2
• 1.3.3
• 1.3.4
• 1.3.5
• 1.3.6
• 1.3.7
• 2.0.0
• 2.0.1
• 2.0.2
• 2.0.3
• 2.0.4
• 2.0.5
• 2.0.6
• 2.0.7
• 2.0.8
• 2.0.9

License

• open-source

Website

• Vendor: https://www.apache.org/

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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