https://seclists.org/oss-sec/2026/q3/117: CVE-2026-40452: Apache IoTDB: Authorization bypass in /st/v2/fastLastQuery exposes last-value data to unauthorized authenticated users

Published Jul 10, 2026
·
Updated

Affected Software

2 affected components
Apache IoTDB>1.3.5<1.3.8
Apache IoTDB>2.0.5<2.0.10
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Frequently Asked Questions

1

What is the severity of CVE-2026-40452?

The severity of CVE-2026-40452 is classified as moderate.

2

Which versions of Apache IoTDB are affected by CVE-2026-40452?

Apache IoTDB versions 1.3.5 before 1.3.8 and 2.0.5 before 2.0.10 are affected by CVE-2026-40452.

3

What type of vulnerability is CVE-2026-40452?

CVE-2026-40452 is an Incorrect Authorization, Improper Access Control vulnerability.

4

How do I fix CVE-2026-40452?

To fix CVE-2026-40452, upgrade Apache IoTDB to version 1.3.8 or higher, or 2.0.10 or higher.

5

What does CVE-2026-40452 expose to unauthorized users?

CVE-2026-40452 exposes last-value data to unauthorized authenticated users through the /rest/v2/fastLastQuery endpoint.

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