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Vulnerability record · CVE-2026-40452 · published 10 July 2026

CVE-2026-40452: Improper access control vulnerability

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.

7.5 CVSS 3.1 High EPSS 0.43% · top 64.8% CWE-284 · Improper access controlCWE-863 · Incorrect authorization Deferred
7.5CVSS 3.1 base score
0.43%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
2References
10 Jul 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

LinkTags
https://lists.apache.org/thread/04j2l6dosyboor4o2gvrzbrcrpllmh95
http://www.openwall.com/lists/oss-security/2026/07/10/7

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Source: NIST National Vulnerability Database (record CVE-2026-40452), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.