CVE-2026-40452

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.

Score

CVSS 3.1 7.5 High

Status

Deferred - security@apache.org

Published

2026-07-10

Last modified

2026-10-25

Weaknesses

CWE-284, CWE-863

Affected products

• Apache Iotdb (Apache Software Foundation)

References

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