CVE-2026-40452

EUVD-2026-42838
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
apacheCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 3%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
apacheiotdb
1.3.5 ≤
𝑥
< 1.3.8
CNA
apacheiotdb
2.0.5 ≤
𝑥
< 2.0.10
CNA
Common Weakness Enumeration
References
https://lists.apache.org/thread/04j2l6dosyboor4o2gvrzbrcrpllmh95
http://www.openwall.com/lists/oss-security/2026/07/10/7