High severity · published Jul 10, 2026
CVE-2026-40452
Apache IoTDB: Authorization bypass in /rest/v2/fastLastQuery exposes last-value data to unauthorized authenticated users
7.5
CVSS
0.4%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AI
Apache IoTDB · Apache Software Foundation
1.3.5 before 1.3.8; 2.0.5 before 2.0.10 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-40452
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-40452
lists.apache.org
https://lists.apache.org/thread/04j2l6dosyboor4o2gvrzbrcrpllmh95
www.openwall.com
http://www.openwall.com/lists/oss-security/2026/07/10/7
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