CVE-2026-40452

High

Description

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.

SeverityHigh

CVSS7.5

Exploit probability—

ProductApache IoTDB

PublishedJul 10, 2026

First seenJul 10, 2026

Weakness typeCWE-863Incorrect authorization CWE-284Improper access control

How to fix

Update

Apache Software Foundation Apache IoTDB1.3.8, 2.0.10 or later

Vendor advisories

lists.apache.org/thread/04j2l6dosyboor4o2gvrzbrcrpllmh95

Affected products

Product	Affected versions	Fixed in
Apache Software Foundation Apache IoTDB	1.3.5 ≤ v < 1.3.8, 2.0.5 ≤ v < 2.0.10	1.3.8, 2.0.10

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